Fcukin Flava is a well-known brand not just because of the inappropriate name but because the liquids are so darn good, as mentioned on their label. These, indeed, are an all-day vape, so they are still here. They were established in 2014 and have since become one of the best-known brands in the UK. Fused within a 70% VG base ensures excellent compatibility with modern, more powerful setups.