A lot of space
Comfortable to carry
Has nice padding
Can't think of any.
I got this bag for christmas, and I have used it a lot since then. I can fit ALL my gear, because it has enough room for a person who doesn't have too many things, like 2 guns, 2 tanks, etc. It has a comfortable shoulder strap and a strap to hold your goggles. It is very well made, durable, I think it will last for a long time. Padding is very nice, and the inside dividers are also padded to protect all your gear. It also has some side pockets to store some tools or small stuff.
I really don't see something wrong with this gear bag, its excellent, its all you need, at a great price. Buy it.