In this video, Andrew goes over and reviews the Beuchat HD Dry Backpack.

This big 70L backpack is perfect for anyone looking for a bag that'll hold a ton of gear. This backpack is big enough to fit two divers gear into. The HD in the name stands for "high durability," as the material used is a thick waterproof material, and features a reinforced bottom. There are two ways to get into the bag, the roll top and the access point at the front of the bag. The roll top may also be secured to the sides of the bag using the attached clips. The bottom of the bag features a purge valve, perfect for rinsing the bag at the end of the day. The back of the bag has adequate padding, and has chest and waist straps in addition to the shoulder straps. You can fit a pair of shorter plastic fins on the inside, however we wouldn't put carbons in the bag. This bag doesn't have any straps or pockets for spearguns or longer fins, and those will need to be carried by hand. 

Overall this bag is a great choice for anyone looking for a big dry bag that is comfortable and has great durability.