I've never used that one, but I have a Coil Master PBag and it's almost identical. Size wise it's actually smaller than I expected. It'll fit a Reuleaux(barely), and fits an eFusion Duo like a glove, just for perspective. The open side pouch is the perfect size for a 30ml glass bottle, and a tall skinny 60ml plastic bottle will just fit. 15ml bottles fit loosely. The zipper pouch is pretty small, but it'll fit a few extra coilheads or some small allen keys/screwdrivers and a spare set of coils and cotton. Two tight loops on the back for a belt, and a clip for a backpack. I've only used mine a few times, but it seems durable enough. For the price it was no huge loss if it wasn't. Elementvape.com has them for $5.