Flum is one of the most searched disposable vape brands in America — and one of the most misunderstood. The brand that launched the iconic Flum Float and Pebble has quietly split into two distinct product lines: Flum Mello (the smooth, screen-equipped series) and Flum UT (the "Ultimate Taste" performance line with dual-flavor technology). Both lines now offer 50,000-puff flagships, putting Flum squarely in competition with RAZ, Geek Bar, and Lost Mary at the top end of the market.
This guide covers every current Flum device, full flavor counts, specifications, pricing, and honest comparisons with competing brands — something you will only find on a multi-brand retailer like VapesOnlineShop.
The Flum Brand Story — From Float to Two Product Lines
Flum (originally Flumigo Technology) entered the US disposable market with the Flum Float around 2021-2022, followed by the Flum Gio and the wildly popular Flum Pebble. At their peak, "flum pebble" was one of the most searched vape terms in the country.
In response to evolving California regulations and market positioning, Flum restructured into two focused product lines rather than continuing under a single umbrella brand:
- Flum Mello — The smooth, lifestyle-oriented series. Themed editions, HD animated screens, ergonomic pebble-shaped design. Devices: Mello 20K and Float Mello Pro 50K.
- Flum UT — The "Ultimate Taste" performance series. Dual mesh coils, turbo mode, and the industry-first dual-flavor switching system. Devices: UT Bar Pro 25K and UT Bar Pro 50K.
Both lines still carry the Flum name on packaging, and the combined flavor catalog now exceeds 100 unique options across all devices. If you have searched for "Float vape" recently — that is also Flum. The brand briefly experimented with a Float rebrand but the Flum name remains dominant in search and on retail shelves.
Current Flum Device Lineup — 4 Active Products
Float Mello Pro 50K
50,000 puffs · Dual Mesh Coil · Turbo/Eco Mode · 10 flavors
The Mello line's powerhouse. Optimized for flavor consistency over extreme distance — 50K puffs is roughly 3-4 weeks for a heavy user. Turbo Mode fires both mesh coils for denser vapor; Eco Mode extends battery life.
Shop Mello Pro 50K — $24.99UT Bar Pro 50K
50,000 puffs · Dual Independent Tanks · Flavor Switch · 40 flavors (25 dual + 15 single)
The headline feature: two separate e-liquid tanks in one device. Switch between flavors with a button, or activate Mix Mode to blend both. At 40 flavor options, it has the largest selection of any single Flum device.
Shop UT Bar Pro 50K — $24.99Flum Mello 20K
20,000 puffs · Hybrid 2.0 Mesh Coil · HD Animated Screen · 33 flavors across 6 editions
The flavor variety king. Six themed editions (Standard, Special, Floral Delights, Valentine, City Series, Christmas) make this the most creatively curated Flum device. The HD animated screen is a nice touch for tracking battery and e-liquid.
Shop Mello 20K — $22.99UT Bar Pro 25K
25,000 puffs · Dual Mesh Coil · Galaxy LED Screen · Smooth/Turbo Mode · 19 flavors
The single-tank workhorse. If you know exactly which flavor you want and do not need the dual-tank gimmick, the 25K delivers 25,000 puffs of consistent output with a more compact body than the 50K.
Shop UT Bar Pro 25K — $23.99Full Specifications — All 4 Devices Compared
| Spec | Float Mello Pro 50K | UT Bar Pro 50K | Mello 20K | UT Bar Pro 25K |
|---|---|---|---|---|
| Product Line | Mello | UT | Mello | UT |
| Puff Count | 50,000 | 50,000 | 20,000 | 25,000 |
| E-Liquid | Large capacity | Dual tanks | 15 ml | 15.5 ml |
| Nicotine | 5% (50 mg) | 5% (50 mg) | 5% (50 mg) | 5% (50 mg) |
| Battery | Rechargeable (USB-C) | Rechargeable (USB-C) | 650 mAh (USB-C) | 650 mAh (USB-C) |
| Coil | Dual Mesh | Dual Mesh | Hybrid 2.0 Mesh | Dual Mesh |
| Screen | HD Screen | HD Screen | Mega HD Animated | Galaxy LED |
| Key Feature | Turbo / Eco Mode | Dual-Tank Flavor Switch | 6 Themed Editions | Smooth / Turbo Mode |
| Flavor Count | 10 | 40 (25 dual + 15 single) | 33 (6 editions) | 19 |
| VOS Price | $24.99 | $24.99 | $22.99 | $23.99 |
For detailed hardware breakdowns, see our individual reviews: Float Mello Pro 50K Review, UT Bar Pro 50K Review, and Mello 20K Review. For charging instructions across all devices, see How to Charge Flum Vape.
Flavor Overview — 100+ Options Across All Devices
Flum's combined catalog is one of the largest in the disposable market — over 100 unique flavor options when you count every device. For the full flavor-by-flavor breakdown with tasting notes, categories, and our picks, see the dedicated Flum Vape Flavors guide.
Here is the high-level count by device and what makes each selection unique:
| Device | Count | What Makes It Different | Best For |
|---|---|---|---|
| UT Bar Pro 50K | 40 | 25 dual-flavor combos (2-in-1 tanks) + 15 single flavors. Unique pairings like Blue Razz / Lemonade and Cola Ice / Cherry that no other device offers. | Vapers who want variety and the ability to switch mid-session |
| Mello 20K | 33 | 6 themed editions including City Series (mint-based city names), Floral Delights (subtle floral notes), and Valentine (romantic blends). Most creative Flum lineup. | Flavor explorers who enjoy themed, curated selections |
| UT Bar Pro 25K | 19 | Focused selection optimized for all-day consistency. No gimmicks — just well-tuned single flavors like Blue Razz Icy and Strawmelon Peach. | Daily drivers who stick with one flavor |
| Float Mello Pro 50K | 10 | Curated best-of selection from the Mello catalog, optimized for the dual mesh coil. Every flavor here is a proven performer. | Vapers who want maximum puffs with a safe flavor choice |
Some flavors overlap between devices (Blue Razz Icy, Cool Mint, Watermelon Icy appear in most lineups), while others are exclusive to specific models. The UT Bar Pro 50K dual-flavor combos like Tobacco / Gold Tobacco and Cool Mint / Icy Mint exist nowhere else in the Flum catalog — or in any competing brand's lineup, for that matter.
Mello vs UT — Two Lines, Two Philosophies
This is the most common question from Flum shoppers: which line should I choose? The short answer depends on what you prioritize.
Choose Mello If You...
- Value flavor variety and creativity — 33+ themed options
- Want the animated HD screen with battery and e-liquid tracking
- Prefer a smooth, ergonomic shape (pebble-like grip)
- Enjoy themed collections (City Series, Floral, Valentine)
- Are coming from the original Flum Pebble — Mello is its direct successor
Choose UT If You...
- Want the dual-flavor switching — two tastes in one device
- Prioritize performance features — Turbo Mode, dual mesh coils
- Like having 40 flavor options including unique dual combos
- Prefer a more traditional bar shape
- Want to try flavor mixing — activate both tanks simultaneously
At the 50K level, both flagships cost $24.99 at VOS. The price difference only appears in the mid-range: Mello 20K ($22.99) vs UT Bar Pro 25K ($23.99), where the UT offers 5,000 more puffs for one dollar more.
How Flum Compares to RAZ, Geek Bar & Lost Mary
As a multi-brand retailer, we carry all these brands side by side. Here is how Flum's flagships stack up against the competition in the 50K-puff category — a comparison you will not find on any brand's own website.
| Feature | Flum UT 50K | Flum Mello Pro 50K | RAZ VUE 50K | Geek Bar Skyview 25K |
|---|---|---|---|---|
| Max Puffs | 50,000 | 50,000 | 50,000 | 25,000 |
| Unique Selling Point | Dual-tank flavor switch | Turbo / Eco modes | 50+ flavors, 3D screen | AI Tuning, Pulse Mode |
| Flavor Options | 40 | 10 | 50+ | 25+ |
| Dual Flavor | Yes — switchable tanks | No | No | No |
| Screen | HD | HD | 3D Smart Display | 3D Smart Screen |
| Best For | Variety seekers | Long-lasting reliability | Flavor enthusiasts | Tech-forward vapers |
The UT Bar Pro 50K's dual-tank system is genuinely unique in the market — no RAZ, Geek Bar, or Lost Mary device offers anything similar. If you frequently switch between two go-to flavors, this is the only device that eliminates the need to carry two units. For a deeper brand-level comparison, see our Flum vs RAZ Vape analysis.
Pricing & Value at VapesOnlineShop
| Device | VOS Price | Puffs | Cost per 1,000 Puffs |
|---|---|---|---|
| Float Mello Pro 50K | $24.99 | 50,000 | $0.50 |
| UT Bar Pro 50K | $24.99 | 50,000 | $0.50 |
| UT Bar Pro 25K | $23.99 | 25,000 | $0.96 |
| Mello 20K | $22.99 | 20,000 | $1.15 |
Both 50K devices deliver the best per-puff value at $0.50 per 1,000 puffs. For context, the RAZ VUE 50K runs around $27-29 for 50,000 puffs — making Flum's 50K options roughly 10-15% cheaper per puff. For a full price comparison including all brands we carry, see Flum Vape Price.
Free shipping on all orders over $80. Ships from Memphis, TN with 3-5 business day delivery.
Legacy Devices — Pebble, Float & Gio
If you came here searching for the Flum Pebble, Flum Float, or Flum Gio — those devices have been discontinued for over two years. Here is what replaced them:
| Discontinued Device | Puffs | Recommended Replacement | Why |
|---|---|---|---|
| Flum Pebble | 6,000 | Mello 20K | Same pebble-shaped ergonomics, upgraded to 20K puffs with HD screen. Direct spiritual successor. |
| Flum Float | 3,000 | Float Mello Pro 50K | Carries the "Float" name forward. 16x the puff count of the original. |
| Flum Gio | 3,000 | Mello 20K | The Gio's silicone-comfort concept evolved into the Mello's ergonomic design. |
Where to Buy Flum Vape
Flum has a more limited retail presence than brands like RAZ or Geek Bar, which is part of why many users search for "Flum vape near me" and come up empty. Local availability depends heavily on your region.
At VapesOnlineShop, all four current Flum devices are in stock and ship from our Memphis, TN warehouse. All products are 100% authentic with verifiable serial numbers. Orders over $80 qualify for free shipping.
Frequently Asked Questions
Is Flum the same as Float vape?
Yes. Flum briefly experimented with a "Float" rebrand, and the Float Mello Pro 50K carries the Float name. Both names refer to products from the same manufacturer (Flumigo Technology / Flum USA). The Flum name remains on packaging and is how most users search for the brand.
What is the difference between Flum Mello and Flum UT?
Mello is the lifestyle-oriented series with themed flavor editions, animated screens, and smooth ergonomics. UT ("Ultimate Taste") is the performance line featuring dual mesh coils, turbo mode, and the UT Bar Pro 50K's unique dual-flavor switching system. Both lines offer 50K-puff flagships at the same price ($24.99).
Can you still buy the Flum Pebble?
The Flum Pebble has been discontinued for over two years. Its direct replacement is the Flum Mello 20K, which keeps the same pebble-shaped ergonomic design but upgrades to 20,000 puffs, an HD animated screen, and Hybrid 2.0 Mesh Coil technology. The Mello 20K is available at VapesOnlineShop for $22.99.
How does the UT Bar Pro 50K dual flavor system work?
The device contains two independent e-liquid tanks, each with its own coil. A switch on the device toggles between Tank A, Tank B, or Mix Mode (both tanks fire simultaneously). The HD screen shows which flavor is active and tracks each tank's e-liquid level independently. The 50,000-puff total is the combined capacity of both tanks.
How many flavors does Flum have in total?
Over 100 when counting all four devices: 40 in the UT Bar Pro 50K (25 dual + 15 single), 33 in the Mello 20K (across 6 themed editions), 19 in the UT Bar Pro 25K, and 10 in the Float Mello Pro 50K. Some flavors overlap between devices, but many are exclusive to specific models. See our complete Flum Vape Flavors guide for the full list.
Is Flum better than RAZ?
They serve different priorities. Flum's UT Bar Pro 50K is the only 50K device with dual-flavor switching, and Flum's 50K devices are priced about 10-15% lower than RAZ equivalents. RAZ counters with a larger single-device flavor catalog (50+ per device vs Flum's 40) and more advanced screen technology. Both are strong choices — it depends on whether you value variety/switching (Flum) or per-device flavor depth (RAZ). See our full Flum vs RAZ comparison.
Are Flum vapes rechargeable?
Yes, all four current Flum devices are rechargeable via USB-C. They are not refillable, however — once the e-liquid is depleted, the device should be disposed of responsibly. For step-by-step charging instructions, see How to Charge Flum Vape.