Why choose a longfill e-liquid?

The longfill format lets you create a custom e-liquid with ease. You choose your nicotine strength, your PG/VG ratio, then simply top up the bottle.

An ideal option for vapers who want full control over their vape, without complicated calculations.

Please note: concentrated flavour, do not vape as is.

How to prepare your Subzero longfill

The process is simple:

• add your nicotine boosters according to your desired strength
• top up with your PG/VG base until the bottle is full
• shake well
• let it steep for 7 days, shaking occasionally for best results

Good to know: this is a concentrate designed to be diluted. Respect the bottle’s capacity to preserve its full aromatic intensity.

Why we love Subzero in longfill

Because it makes no compromises. Subzero delivers an intense menthol experience, crafted for those who enjoy powerful sensations.

With the longfill format, you can adapt this legendary freshness to your device and vaping style, while keeping its signature impact intact.

It’s also a more economical option: simply add boosters and base to obtain a larger volume of e-liquid at a lower cost. A perfect way to enjoy this iconic icy hit for longer.

Subzero longfill by Halo - product details

• Flavour profile: menthol
• Cooling effect: yes
• Content: 20 ml of flavour concentrate
• Bottle: 60 ml
• Nicotine: 0 mg
• To be mixed with PG/VG base and boosters
• Steeping time: 7 days
• Origin: United States