The Smok TFV4 Mini Sub-ohm Tank is a smaller, 22mm, version of the TFV4 tank. Like its big brother, this tank gives users the choice of a wide variety of coil options. Designed to provide a vaping experience like no other, this tank offers both fantastic flavor and dense clouds of vapor. The easy to use top fill system makes refilling your tank as easy as it gets. The Smok TFV4 Mini Sub-ohm Tank proves big things come in small packages!