Cressi Gorilla Pro XL BagGorilla Pro XL Bag A large and roomy bag, plenty of space for storage. Internal capacity of 135 liters 4. 75 cu ft. The bag is long enough to hold even the long freediving fins. It is made from a strong radio frequency (RF) welded seam PVC and is waterproof. Equipment can be washed with water while still inside the bag. No water comes out when transported, even by car. Once you have finished washing your gear the bag has a special draining cap