Kangertech is renowned for their high quality products and unique designs, and their newest addition to their Protank series, the Protank 4, is no exception! With two filling options, top and side, mouth-to-Lung and direct-to-lung inhales, new and improved drip tip, child lock, DIY kit, Pro RBA with dual Clapton Coil, and a 5ml capacity this tank is a BEAST! Not only does Kanger give you multiple options and features with this tank, but prepare to blow out some serious vapor clouds!