It is a large and spacious bag with ample storage space. The internal capacity is 4.75 cubic feet (135 liters). The bag is long enough to fit even the long fins for freediving. It is made of durable PVC with radio frequency (RF) welded seams and is waterproof. The equipment can be rinsed with water while inside the bag. Once you have completed rinsing the equipment, the bag has a special drainage valve on one edge to allow the water to exit easily and comfortably. It comes with practical carrying handles at the top and two straps which can also be used as shoulder straps. Water does not leak during transport, even by car.