Hydra Vapor Tech have released another new design in the Typhon Case range. This time it is one designed specifically for cartridge users. Inside the strong and sleek anodized aluminum case is everything you need to take your cartridge pen out for a day of use. There is a Stylus battery in the first slot and then two cartridges in the slots next to it. The first cartridge is half a millilitre in capacitiy and the second can carry a full millilitre, meaning you have plenty of oil capacity for a day out. There is also a small slot with a USB charger adapter so that even if your battery runs out you'll be able to give it a quick boost on the go.