This bag is kinda bulky, and if you fill this sucker it's going to be really heavy. That said, I packed 2 sets of fins, 2 masks, 2 snorkels, a westuit, 2 BCs, 2 regulators, 2 pairs of boots and a couple towels into this bag. The padded pocket on the end is intended for your reg, but it's also great for all the things you don't want wet. we put a change of clothes in there for one of our classes. drains well, fits in even small trunks. I put this bag, 6 tanks and 2 camp chairs in the trunk of a toyota camry with no problems whatsoever. If your looking for a bag to hold all your stuff and then some, this is the bag for you. The side fin pocket is nice and gives the bag some shape as you pack everything else, then they're out of the way when your unpacking. I love this bag.