The sliding top-fill is genuinely a game changer, no more unscrewing the cap with juice on my fingers at a red light. 5.5mL lasts me a solid two days before I even think about refilling.
William★★★★★
I was worried the 5.5mL capacity would make this thing chunky, but the zinc alloy body feels solid without weighing down my mod. Refills are quick with the slide top and I haven't had a single leak yet.
Nicholas★★★★★
The sliding top-fill is honestly the best part, I can top it off one-handed at a red light without unscrewing anything. The zinc-alloy body feels solid in the hand too, not cheap or rattly at all.