Flum Mello 20K Cool Mint Review — Tasting Notes & Score

Flavor Snapshot

Tasting Notes — Inhale to Exhale

First Inhale

The opening draw delivers a mint-candy sweetness that caught our panel off guard. Most cool mints start cold and stay cold — Flum leads with sugar. A gentle peppermint note sits underneath, but it takes a backseat to what feels more like a crushed mint Lifesaver than a menthol hit. Cooling onset is slow, arriving around 0.5 seconds after the draw begins.

Mid-Draw Body

By mid-draw, the cooling agent ramps up and the sweetness recedes slightly. We noted a recognizable peppermint character here — not wintergreen, not spearmint — though it never reaches the sharpness of a pure menthol formulation. The vapor density from the mesh coil is decent, carrying flavor without thinning out. Our panel described the body as “round” rather than “crisp.”

Exhale

The exhale is where cooling peaks. A bracing frost coats the throat and lingers in the nasal passage — this is likely WS-23 based, given the cold-without-flavor character. The sweetness returns briefly on the breath out, a faint candied trail that separates Flum from the drier mints in our lineup. No harshness, no chemical bite.

Aftertaste

The mint residue lasts about 3-4 seconds — adequate but not memorable. A faint sweetness clings to the palate, and the cooling fades at a moderate pace. You won’t find the evolving peppermint trail that RAZ or Geek Bar leave behind. It simply tapers off. Functional, not fascinating.

Dimension-by-Dimension Scoring

Sweetness — 38/100 (Mild)

Higher than most cool mints in our database. Flum adds a noticeable candy-mint sweetness that softens the experience. This is deliberate — it makes the Mello 20K more approachable for mixed-flavor users who are trying mint for the first time. Menthol purists will find it distracting.

Cooling — 76/100 (Arctic)

Strong cooling that registers clearly in the throat and nasal passage. It falls short of the Geek Bar Clio’s 88 or RAZ DC25000’s 84, but 76 is no slouch. The ice hits the back of the throat more than the palate, suggesting a WS-23 dominant blend rather than natural menthol. Sufficient for daily mint users; not enough for hardcore ice chasers.

Authenticity — 71/100 (Faithful)

The mint reads as peppermint — identifiable and clean. Flum doesn’t try to replicate a complex herbal mint or a dual-mint blend. It’s a single-note peppermint candy interpretation. Faithful to that concept, but limited in complexity compared to RELX’s herbal mint or Geek Bar’s layered peppermint-spearmint profile.

Aftertaste — 64/100 (Lingering)

A moderate mint trail with a sweet finish. Nothing evolves or shifts after the exhale — the flavor simply fades. It’s pleasant while it lasts, but our panel noticed it clearing faster than competing devices. The sweet component in the aftertaste is unusual for a cool mint and contributes to the “mint candy” read.

Throat Hit — 62/100 (Balanced)

Middle-of-the-road throat presence. Enough to register as satisfying on each draw, but not the assertive punch that ex-smokers might expect from a mint. RAZ scores 68 in this dimension, and that gap is noticeable side by side. The Mello 20K smooths things out — maybe too much for users who want their mint with teeth.

Aroma Intensity — 67/100 (Full-Bodied)

The vapor carries a clear peppermint scent at arm’s length. Not room-filling, but definitely present. The candy sweetness translates into the aroma too — a hint of sugar alongside the mint. It’s a pleasant cloud, though not as sharp or clean-smelling as the Foger BIT 35K’s eucalyptus-tinged exhale.

Device Specs

Puff Count	20,000
E-Liquid Capacity	15ml
Nicotine Strength	5% (50mg Salt Nic)
Battery	650mAh, USB-C Rechargeable
Coil Type	Mesh Coil
Display	LED Screen (Battery & E-Liquid)
Activation	Draw-Activated

How It Compares

Among the 8 cool mint disposables our panel has scored, Flum Mello 20K sits at #6 with a 64 overall. For context:

Rank	Brand & Device	Overall
1	Geek Bar Clio Platinum 50K	71
2	RAZ DC25000	69
3	RELX Pocket 30K	67
3	Foger BIT 35K	67
5	Kado Bar NI40K	65
6	Flum Mello 20K ←	64
7	Lost Mary MO5000	63

The Flum Mello 20K’s biggest differentiator is its sweetness — 38 versus the category average around 30-32. If you want a mint that reads more like candy than menthol, Flum carved that niche. But for raw cooling power and mint purity, the top three pull away decisively. The closest competitor above is Kado Bar NI40K at 65, which offers adjustable ice intensity and 40K puffs for a similar price point.

Best Paired With

• Morning coffee — The mild sweetness complements a dark roast without clashing. A soft mint reset between sips.
• Post-meal palate cleanser — The moderate cooling refreshes after heavy or spicy food. Not overpowering enough to numb your tongue.
• Evening wind-down — The relaxed throat hit and candy-mint profile suit low-key sessions. Pair with green tea or sparkling water.
• Mint-curious switchers — If you normally vape fruit or dessert flavors and want to try mint without the arctic shock, this is your on-ramp.

The Bottom Line

Flum Mello 20K Cool Mint takes a softer approach to the mint category. It’s sweeter, rounder, and less aggressive than the competition — which is either its strength or its limitation depending on what you want from a cool mint. Our panel scored it 64/100, placing it in the lower half of our cool mint rankings. The flavor is pleasant and the 20K puff count with LED display adds practical value. But if you want your mint with genuine bite, RAZ DC25000 or Geek Bar Clio Platinum 50K deliver more of what defines this category.

Shop Flum Mello 20K Cool Mint →

Common Questions

How strong is the cooling on the Flum Mello 20K Cool Mint?

Our panel scored cooling at 76/100, placing it in the Arctic range. It delivers a strong menthol-like frost, primarily felt in the throat and nasal passage. However, it’s noticeably less intense than top-scoring mints like Geek Bar Clio Platinum 50K (88) or RAZ DC25000 (84).

Is the Flum Mello 20K Cool Mint sweet?

Yes, sweeter than most cool mints. It scored 38/100 on sweetness — the highest among the 8 cool mints we tested. Most competitors fall between 26-35. The added sweetness gives it a mint-candy character rather than a pure menthol taste.

How long does the Flum Mello 20K last?

The device is rated for 20,000 puffs with a 15ml e-liquid capacity. The 650mAh battery is rechargeable via USB-C. At moderate usage (300-400 puffs per day), expect roughly 7-8 weeks of use.

How does Flum Mello Cool Mint compare to RAZ DC25000 Cool Mint?

RAZ DC25000 scores 69 overall versus Flum’s 64. RAZ delivers a drier, sharper peppermint with stronger cooling (84 vs 76) and more assertive throat hit (68 vs 62). Flum is sweeter and smoother — better for casual mint users, while RAZ suits menthol purists who want intensity.

What type of mint is the Flum Mello 20K — peppermint or spearmint?

Our panel identified it as peppermint-forward, with no significant spearmint or wintergreen notes. The added sweetness gives it a candy-mint profile rather than a natural herbal mint character. The cooling agent appears to be WS-23 based rather than natural menthol.