This is the XS Scuba Standard 50 lb Lift Bag Scuba Diving Lift Bag Features: Traditional open bottom design 50 lbs. of positive lift Rolls up to compact size 316 stainless steel 4 bolt clip for attachment Heavy-duty, PVC material The XS Scuba Standard 50 lbs. (23 kg) Lift bag is a traditional open bottom design. The lift bag is manufactured from durable and heavy-duty PVC and is bright orange in color for easy identification on the surface. "