I use a advken holster for all my mods it works great. I can fit a mech a spare battery a 2 battery box mod and a 60ml bottle of juice with no problems. It has a belt clip or you can run your belt through. Now it is a soft case but has a Velcro flap to cover your mod and is super easy to take out and put in without even looking and they typically last me a year before they show signs of wear.