Flum's combined flavor catalog is one of the deepest in the disposable market — over 100 unique options across four devices, two product lines, and six themed Mello editions. The UT series leads with the industry's only dual-flavor switching system (two tanks, one device), while the Mello series takes a curated approach with city-themed, floral, and seasonal collections you will not find from RAZ or Geek Bar.
This guide lists every Flum flavor currently available, organized by device with tasting notes, categories, and our cross-device recommendations. All products are in stock at VapesOnlineShop and ship from Memphis, TN.
Flavor Count at a Glance
Total unique flavor names across all devices: approximately 80+ (some overlap between lineups). That is roughly comparable to RAZ's 100+ catalog and significantly larger than Lost Angel's 23 flavors or most Geek Bar lineups.
Our Top 10 Flum Flavor Picks — Cross-Device Recommendations
These are our best-selling and highest-rated Flum flavors at VapesOnlineShop, selected across all four devices. As a multi-brand retailer, we see sales data across Flum, RAZ, Geek Bar, and 30+ other brands — so these picks reflect what Flum does better than the competition, not just what sells.
| # | Flavor | Device(s) | Why It Made the List |
|---|---|---|---|
| 1 | Blue Razz / Lemonade (Dual) | UT 50K | The signature dual-flavor combo. Sweet-sour blue raspberry on one side, tart lemonade on the other, or mix them together. This pairing does not exist anywhere else in the market — not on RAZ, not on Geek Bar. |
| 2 | Blue Razz Icy | Mello 20K · UT 25K · Mello Pro 50K | The universal crowd-pleaser, available on three devices. Classic blue raspberry tartness with a clean icy finish. Consistently our top seller across every brand that offers it. |
| 3 | Midnight Barcelona | Mello 20K (City Series) | Grape, aloe, and mint layered into a complex, sophisticated profile. This is the kind of creative, themed flavor that only the Mello line offers — nothing comparable from RAZ or Geek Bar. |
| 4 | Strawberry / Watermelon Icy (Dual) | UT 50K | Two of the best-selling individual flavors in vaping, now in one device. Switch between pure strawberry sweetness and icy watermelon, or blend them mid-session. |
| 5 | Strawmelon Peach | UT 25K | Strawberry-watermelon-peach three-way blend. Similar to RAZ's mixed fruit profiles but optimized for the 25K's single-tank consistency. A strong daily driver that never gets tiring. |
| 6 | Vienna Bliss | Mello 20K (City Series) | Strawberry cream with a cooling mint exhale. The dessert-meets-menthol profile is a niche that Mello owns — RAZ covers this space with "Strawberry Shortcake" but without the cooling finish. |
| 7 | Aloe Grape / Aloe Watermelon (Dual) | UT 50K | Soothing aloe base with grape on one side and watermelon on the other. Smooth, hydrating feel that stands apart from the typical icy or sweet profiles. Popular with all-day vapers who want something gentler. |
| 8 | Velvet | Mello 20K (Floral Delights) | Red velvet cake — smooth, sweet, creamy. Flum's best dessert flavor and genuinely hard to find this profile executed well in the disposable category. A Mello exclusive. |
| 9 | Cool Mint / Icy Mint (Dual) | UT 50K | Two intensities of mint in one device: breezy sweet mint on one side, hard-hitting arctic blast on the other. Perfect for menthol lovers who sometimes want a lighter option without switching devices. |
| 10 | Watermelon Peach Lime | Mello 20K · Mello Pro 50K | Three-fruit blend with a zesty lime finish. The lime cuts through the sweetness in a way most watermelon-peach combos miss. Available on both Mello devices. |
UT Bar Pro 50K — Dual Flavors (25 Combos)
Each dual-flavor option contains two independent e-liquid tanks. You can vape Flavor A alone, Flavor B alone, or activate Mix Mode to fire both coils simultaneously. The HD screen shows which tank is active and tracks each tank's e-liquid level separately. This is exclusive to the UT Bar Pro 50K — no other Flum device or competing brand offers dual-tank switching.
| Tank A / Tank B | Tasting Notes | Category |
|---|---|---|
| Aloe Grape / Aloe Watermelon | Soothing aloe base on both sides. Crisp grape vs lush watermelon. Smooth, hydrating duo. | Fruit |
| Banana Smoothy / Strawberry | Creamy banana smoothie meets fresh-picked strawberry. Dessert-fruit hybrid. | Fruit / Beverage |
| Blue Razz / Lemonade ⭐ | Sweet-sour blue raspberry paired with tart lemonade. Best-selling dual combo. Outstanding in Mix Mode. | Fruit / Beverage |
| Bluerazz Ice / Triple Berry | Icy blue razz on one side, blueberry-raspberry-blackberry medley on the other. Berry overload. | Icy Fruit |
| Cool Mint / Icy Mint ⭐ | Sweet breezy mint vs hard-hitting arctic blast. Two mint intensities, one device. | Mint |
| Clear / Clear | Unflavored on both sides. Pure nicotine delivery with zero taste or aroma. | Other |
| Green Apple / Fuji Apple | Zesty sour green apple vs sweet ripe Fuji. The apple lover's dream dual. | Fruit |
| Mango / Strawberry | Rich creamy mango paired with bright garden strawberry. Classic tropical-meets-berry. | Fruit |
| Miami Mint / Mint Slushy | Sweet spearmint with citrus hints vs icy mint slushy. Lighter, breezier than Cool/Icy duo. | Mint |
| Naked / Spring Water | Ultra-clean unflavored vs mild mineral water scent. For those who want zero artificial flavoring. | Other |
| Passionfruit / Mango | Zesty tart passionfruit meets sweet rich mango. Sour-sweet tropical balance. | Fruit |
| Sour Fab / Citrus Ice | Sour fruit candy vs icy citrus. One sweet-sour, one cold-sour. Interesting contrast. | Sweets / Icy |
| Strawberry / Watermelon Icy ⭐ | Two of the best-selling flavors in all of vaping, now in one device. Pure strawberry sweetness vs icy watermelon. | Fruit / Icy |
| Thai Mango / Juice Peach | Vibrant Thai mango with strong tropical notes vs mild, smooth juicy peach. | Fruit |
| Tobacco / Gold Tobacco | Classic earthy tobacco vs premium smooth gold tobacco with mild sweetness. For traditionalists. | Tobacco |
| Watermelon / B-Pop | Fresh watermelon paired with blow-pop candy sweetness. Fruit-meets-candy. | Fruit / Sweets |
| White Gummy / Cherry | Pineapple-infused gummy bear vs zesty sweet-tart cherry. Candy duo. | Sweets / Fruit |
| White Peach / Lemon Head | Mild juicy white peach vs intense lemon sour candy. Smooth meets punch. | Fruit / Sweets |
| White Peach / Raspberry | Two mild, smooth fruit profiles. Light and easy — best for all-day vaping without fatigue. | Fruit |
| Strawnana / Gelato | Strawberry-banana classic on one side, Italian gelato ice cream on the other. Dessert heaven. | Fruit / Sweets |
| Aloe Watermelon / Sour Sweet | Fresh aloe watermelon vs perfectly balanced sour-sweet candy. Refreshing meets playful. | Fruit / Sweets |
| Raspberry Grape / Guava | Tangy raspberry-grape blend vs tropical guava with a zesty twist. Uncommon pairing. | Fruit |
| Root Soda / Vanilla | Authentic root beer soda vs pure creamy vanilla. Mix mode creates a root beer float. | Beverage / Sweets |
| Blue Rancher / Lemonade | Blue Jolly Rancher-style candy vs fresh lemonade. Sweet candy meets refreshing citrus. | Sweets / Beverage |
| Cola Ice / Cherry | Icy Coca-Cola vs tangy cherry. Mix mode creates a cherry Coke on ice. Nostalgic hit. | Beverage / Fruit |
UT Bar Pro 50K — Single Flavors (15)
These use the 50K's full combined tank capacity focused on one flavor — maximum puffs, maximum consistency. Ideal if you know exactly what you want and do not need the dual-tank feature.
| Flavor | Tasting Notes | Category |
|---|---|---|
| Mexican Mango | Ripe, syrupy sweetness unique to Mexican mango varieties. The richest mango in Flum's catalog. | Fruit |
| Passion Kiwi Pineapple | Bold triple-sour blend — passionfruit, kiwi, pineapple. Zesty fruit punch, not for the faint-hearted. | Fruit |
| Cherry Strawberry Gummy | Gummy candy base with cherry and strawberry. Smooth fruity sweetness, candy-forward. | Sweets |
| Lemon Drop | Lemon hard candy — the candy base balances the sourness perfectly. Sharp and satisfying. | Sweets |
| Straw Guava | Strawberry meets tropical guava. Sweet yet refreshing, unexpectedly good pairing. | Fruit |
| Strawberry Watermelon | The classic duo in single-flavor format. Sweet strawberry blends with juicy watermelon, no ice. | Fruit |
| Miami Mint | Minty base with mild sweetness and a splash of fruit. Lighter than Cool Mint or Icy Mint. | Mint |
| Wild Berry Drop | Hard candy with mixed wild berry flavoring. Sweet and tangy with a candy finish. | Sweets |
| Watermelon Sour Peach | Watermelon and peach with an extra sour note. The sourness adds dimension most fruit flavors lack. | Fruit |
| Watermelon Ice | Classic watermelon on ice. Refreshing, light, straightforward — the safe choice that always works. | Icy Fruit |
| Tropical Rainbow Blast | Mixed tropical fruits in a sweet-zesty explosion. The "try everything at once" option. | Fruit |
| Strawberry Swirl | Fresh strawberry blended with apple juice. A classic drink profile — sweet and drinkable. | Beverage |
| Sour Apple | Green apple with a strong sour punch. Same classic sweet-sour bite every time. | Fruit |
| Blue Razz Ice | Blue raspberry with menthol. The all-time popular combination — no surprises, just reliable quality. | Icy Fruit |
| Aloe Grape | Sweet grape with smooth aloe vera base. Flavorful yet gentle, one of Flum's signature profiles. | Fruit |
UT Bar Pro 25K — All 19 Flavors
The UT Bar Pro 25K delivers 25,000 puffs from a single tank with dual mesh coils and Galaxy LED screen. These 19 flavors are optimized for all-day consistency — no "flavor fatigue" over 25K puffs. The lineup leans toward fruit and icy profiles with a few candy and beverage options.
| Flavor | Tasting Notes | Category |
|---|---|---|
| Blue Razz Icy ⭐ | Tangy blue raspberry with a refreshing icy finish. The gold standard — perfectly balanced tartness and cool. | Icy Fruit |
| Thai Mango Icy | Sweet Thailand mango with an icy kick. Rich tropical flavor that stays strong through 25K puffs. | Icy Fruit |
| Watermelon Icy | Juicy watermelon chilled in an ice box. Clean, refreshing, no complexity — just pure watermelon cool. | Icy Fruit |
| Double Green Pop | Green apple mixed with lime juice. Crisp double-green sourness. | Fruit |
| Lime Splash | Vibrant lime with a zesty twist. Bright and refreshing, a palate cleanser. | Fruit |
| Passion Kiwi | Passionfruit meets kiwi in a sweet-tart tropical blend. | Fruit |
| Peach Mango Watermelon | Triple-fruit tropical mix — peach, mango, and watermelon layered together. | Fruit |
| Raspberry Apple Blackberry | Raspberry-blackberry base with fresh red apple for brightness. Berry-forward. | Fruit |
| Strawberry Blast | Pure sweet strawberry — nothing added, just that sweet-tart taste concentrated. | Fruit |
| Straw Mango | Strawberry blended with rich mango. A classic two-fruit pairing that just works. | Fruit |
| Strawmelon Peach ⭐ | Strawberry, watermelon, and peach — sweet yet refreshing three-way blend. Top 10 pick. | Fruit |
| Watermelon Blueberry | Juicy watermelon meets sweet blueberry. A delicious two-fruit smash. | Fruit |
| Cool Mint (Super Mint) | High-impact mint with extra coolness. Clears the palate instantly — pure menthol satisfaction. | Mint |
| Sour Burst | Fruit candy dipped in sour powder. Multi-layered sweet-sour candy profile. | Sweets |
| White Gummy | White gummy bear — smooth pineapple-infused candy sweetness in vapor form. | Sweets |
| Grape Pop Icy | Purple grape soda straight from the freezer. Fizzy, cooling, and nostalgic. | Beverage |
| Red Pop | Mixed red-fruit soda. A mystery blend of red fruits in fizzy drink form. | Beverage |
| Tobacco Cream | Rich tobacco leaf layered with smooth vanilla-cream finish. Sophisticated and authentic. | Tobacco |
| Clear | Unflavored — just nicotine. Zero taste, zero aroma, zero aftertaste. | Other |
Mello 20K — All 33 Flavors by Edition
The Flum Mello 20K takes a completely different approach to flavors. Instead of one flat list, flavors are organized into six themed editions, each with a unique device design and curated flavor palette. The Standard Edition covers the classics, while editions like City Series and Floral Delights venture into creative territory no other brand touches — not RAZ, not Geek Bar, not Lost Mary.
Standard Edition (17 Flavors)
The core lineup — all the staples you would expect, plus a few surprises like Sapphire and Fabulous.
| Flavor | Tasting Notes | Category |
|---|---|---|
| Blue Razz Icy | Classic blue raspberry on ice — the universal crowd-pleaser. | Icy Fruit |
| Frozen Watermelon | Fresh watermelon juice chilled with mint leaves. A touch more complex than plain Watermelon Icy. | Icy Fruit |
| Peach Icy | Sweet peach chilled on ice. Balanced sweetness and menthol. | Icy Fruit |
| Sour Apple Icy | Zesty green apple with sour twist and chilling rush. | Icy Fruit |
| Spearmint Watermelon | Juicy watermelon with spearmint — a sweet, unique sensation. | Mint / Fruit |
| Watermelon Icy | Fresh watermelon straight from the freezer. Clean and classic. | Icy Fruit |
| Ruby Green | Sweet strawberry blended with refreshing guava. | Fruit |
| Ruby Yellow | Strawberry, mango, and lemon — a three-fruit trio. | Fruit |
| Strawberry Blast | Pure concentrated strawberry sweetness. | Fruit |
| Summer Delux | Mixed tropical fruit blend — tangy and summery. | Fruit |
| Sunshine Cherry | Big juicy cherry with a sour kick, sweet under the sun. | Fruit |
| Watermelon Peach Lime ⭐ | Three-fruit blend with zesty lime finish. The lime cuts through the sweetness perfectly. | Fruit |
| Cool Mint | Pure menthol, extra cold. Nothing else. | Mint |
| Miami Mint | Menthol base with a bit of sweetness and a splash of fruit. | Mint |
| Fabulous | Vibrant fruit scent with sweet candy base. Addictively sweet. | Sweets |
| Sapphire | Gummy candy with mixed fruit and icy touch. Mystery blend. | Sweets |
| Tobacco | Classic tobacco, nothing added. Authentic leaf taste. | Tobacco |
Special Edition (4 Flavors)
The experimental lineup — unconventional profiles for adventurous palates.
| Flavor | Tasting Notes |
|---|---|
| Clear | Unflavored — pure nicotine, zero taste or aroma. |
| Vol.1 | Sour green apple meets honeydew melon. Balanced sweet-sour. |
| Vol.5 | A puff of pure freshness with a minty base. Clearness in vapor form. |
| Vol.9 | Raspberry and cranberry berry party. Tangy sweetness. |
Floral Delights Edition (4 Flavors)
Subtle floral notes blended with fruit and dessert profiles. This is territory that RAZ, Geek Bar, and Lost Mary do not touch at all — floral vape flavors are a Flum Mello exclusive.
| Flavor | Tasting Notes |
|---|---|
| Blossom | Mild, elegant floral scent. Dreamy and light on the tongue. |
| Bluebell | Fresh blueberry with subtle floral undertones. Flavorful but not overly sweet. |
| Daisy Jazzy | Mixed fruit with a mild floral note. Unique yet delicious. |
| Velvet ⭐ | Red velvet cake — smooth, sweet, creamy. Flum's best dessert flavor, period. |
Valentine Edition (2 Flavors)
| Flavor | Tasting Notes |
|---|---|
| Crush | Mixed fruit gummy candy with a standout sweet peach scent. |
| Heartbeat | Tangy raspberry meets sweet watermelon. A head-spinning berry sensation. |
City Series Edition (4 Flavors)
Sophisticated mint-based blends named after iconic cities. All four feature a cooling menthol base — these are not fruit-forward flavors. Think of them as mint flavors with personality. Another Mello exclusive category.
| Flavor | Tasting Notes |
|---|---|
| Midnight Barcelona ⭐ | Deep grape with aloe and a mint base. Smooth, mysterious, and cooling. Our top City Series pick. |
| Milano Adore | Vibrant blueberry where sweet meets sour, topped with refreshing mint. |
| Rome | Tangerine and mixed fruits on a minty base. Multi-layered and bold. |
| Vienna Bliss ⭐ | Strawberry cream with a surprisingly cooling exhale. Dessert-meets-menthol done right. |
Christmas Edition (2 Flavors)
| Flavor | Tasting Notes |
|---|---|
| Red Bells | Strawberry blends with tangy raspberry. A sweet red berry duet. |
| Reindeer | Blueberry-pomegranate with a mint base. Bold blue-red berry with cooling finish. |
Float Mello Pro 50K — All 10 Flavors
The Float Mello Pro 50K takes a "greatest hits" approach — 10 proven performers from the Mello catalog, optimized for the dual mesh coil system. In Turbo Mode, these flavors hit with denser, warmer vapor. In Eco Mode, they stretch to maximize the 50,000-puff capacity.
Shop Float Mello Pro 50K — $24.99
| Flavor | Tasting Notes | Also on Mello 20K? |
|---|---|---|
| Blue Razz Icy | Sweet, tart blue raspberry with a sharp icy exhale. The definitive version on the 50K's dual mesh coils. | ✅ Yes |
| Cool Mint | Crisp arctic blast, clears the palate. Stronger hit in Turbo Mode. | ✅ Yes |
| Miami Mint | Sweet spearmint with citrusy mojito vibes. Lighter, breezier cooling. | ✅ Yes |
| Peach Icy | Frozen Georgia peach. Ripe nectar balanced with menthol finish. | ✅ Yes |
| Sour Apple Icy | Green apple hard candy with mouth-puckering sourness into a cool finish. | ✅ Yes |
| Sour Mango Pineapple | Tropical powerhouse — tart unripe mango cuts through sugary pineapple. Complex layers. | 🆕 50K Exclusive |
| Strawmelon | Strawberry + watermelon, no ice. Sweet, smooth, universally loved. | 🆕 50K Exclusive |
| Watermelon Icy | Pure lush watermelon chilled to freezing. Light, refreshing, strong throat hit in Turbo. | ✅ Yes |
| Watermelon Peach Lime | Three-fruit blend — sweet watermelon base, soft peach body, zesty lime finish. | ✅ Yes |
| Clear | Flavorless, clean, pure. Nicotine only, zero aftertaste. | ✅ Yes |
Two flavors are exclusive to the Float Mello Pro 50K: Sour Mango Pineapple (tropical sour profile) and Strawmelon (classic strawberry-watermelon without ice). The other 8 are upgraded versions of Mello 20K favorites.
Flavor Overlap — Same Name, Different Device
Some Flum flavors appear on multiple devices. Here are the key cross-device flavors and whether the experience differs:
| Flavor | UT 50K | UT 25K | Mello 20K | Mello Pro 50K |
|---|---|---|---|---|
| Blue Razz Icy / Ice | ✅ (single) | ✅ | ✅ | ✅ |
| Cool Mint | ✅ (dual) | ✅ | ✅ | ✅ |
| Watermelon Icy / Ice | ✅ (single) | ✅ | ✅ | ✅ |
| Miami Mint | ✅ (single + dual) | — | ✅ | ✅ |
| Peach Icy | — | — | ✅ | ✅ |
| Watermelon Peach Lime | — | — | ✅ | ✅ |
| Sour Apple Icy | — | — | ✅ | ✅ |
| Strawberry Blast | — | ✅ | ✅ | — |
| Tobacco | ✅ (dual) | Tobacco Cream | ✅ | — |
| Clear | ✅ (dual + single) | ✅ | ✅ | ✅ |
The flavor formula is identical across devices, but the hardware affects the experience: the UT 50K's dual mesh coils tend to produce warmer, denser vapor, while the Mello 20K's Hybrid 2.0 Mesh Coil delivers a smoother, cooler draw. If you love Blue Razz Icy and want the biggest clouds, the Float Mello Pro 50K in Turbo Mode is the way to go.
Flum Flavors vs RAZ & Geek Bar — A Multi-Brand Perspective
As a retailer that stocks all these brands, here is what Flum does differently in the flavor department:
| Dimension | Flum (All Devices) | RAZ | Geek Bar |
|---|---|---|---|
| Total Unique Flavors | 80+ | 100+ | 60+ |
| Dual-Flavor Combos | 25 (exclusive) | None | None |
| Themed Editions | 6 (Mello exclusive) | Named Series (Gush, Dew, etc.) | None |
| Floral Flavors | 4 (Mello exclusive) | 0 | 0 |
| City-Named Flavors | 4 (Mello exclusive) | 0 | 0 |
| Beverage / Soda Flavors | 5+ | 3-4 | 3-4 |
| Dessert Flavors | Velvet, Strawnana/Gelato, etc. | Graham Twist, Shortcake | Limited |
| Strongest Category | Creative variety & dual combos | Per-device flavor depth | Icy fruit profiles |
Flum's unique advantage is two things no competitor can match: the UT Bar Pro 50K's dual-flavor switching system and the Mello 20K's themed edition approach (City Series, Floral Delights, Valentine, Christmas). If you are the type who likes to explore and rotate between creative profiles, Flum has the deepest creative well. If you want the broadest selection of traditional flavors in one device, RAZ has the edge with 50+ options per device.
Frequently Asked Questions
What is the best-selling Flum flavor?
At VapesOnlineShop, the Blue Razz / Lemonade dual combo on the UT Bar Pro 50K is our current #1 Flum seller, followed by Blue Razz Icy (available on three devices) and the Strawberry / Watermelon Icy dual combo.
Are Flum Mello 20K and Float Mello Pro 50K flavors the same?
Eight of the 10 Float Mello Pro 50K flavors also appear in the Mello 20K lineup (Blue Razz Icy, Cool Mint, Miami Mint, Peach Icy, Sour Apple Icy, Watermelon Icy, Watermelon Peach Lime, Clear). Two are 50K exclusives: Sour Mango Pineapple and Strawmelon. The flavor formula is the same, but the 50K's dual mesh coils produce warmer, denser vapor.
Can I mix the two flavors on the UT Bar Pro 50K?
Yes. The UT Bar Pro 50K has three modes: Flavor A only, Flavor B only, and Mix Mode (both coils fire simultaneously). The best mix combinations according to our customers: Cola Ice / Cherry (cherry Coke), Root Soda / Vanilla (root beer float), and Blue Razz / Lemonade (berry lemonade).
Which Flum device has the most flavors?
The UT Bar Pro 50K leads with 40 flavor options (25 dual combos + 15 singles), followed by the Mello 20K with 33 flavors across 6 themed editions, the UT Bar Pro 25K with 19, and the Float Mello Pro 50K with 10.
Does Flum have tobacco flavors?
Yes, across multiple devices. The Mello 20K Standard Edition has a classic Tobacco. The UT Bar Pro 25K has Tobacco Cream (tobacco + vanilla-cream). The UT Bar Pro 50K has a unique Tobacco / Gold Tobacco dual combo, giving you classic and premium tobacco in one device.
What are the Flum Mello 20K "City Series" flavors?
The City Series is a Mello 20K exclusive edition featuring four mint-based flavors named after European cities: Midnight Barcelona (grape + aloe + mint), Milano Adore (blueberry + mint), Rome (tangerine + mixed fruit + mint), and Vienna Bliss (strawberry cream + cooling mint). All four use a menthol base — they are sophisticated mint flavors with fruit or dessert character, not typical fruit flavors.