The Carter Open Bottom Lift Bags are very versatile light to medium-duty lift bags. They are excellent for sport divers and are suitable for most types of underwater lifting and light salvage. All but the 25 lbs., 50 lbs. and 75 lbs. (11.36, 22.73 and 34 kg) bags have diver actuated dump valves, and all are open at the bottom to vent expanding air as they ascend. They are economical, lightweight, and fold into a neat, compact roll for easy handling underwater. The 25 lbs. and 75 lbs. (11.36 and 34 kg) bags are made from a strong but lighter weight urethane coated nylon material. All Carter Bags have one or more handles and tie-off points to make them easy to grasp and secure both in and out of water. All Carter Bags are designed to be folded and rolled into compact, negatively buoyant rolls that are easy to handle and deploy underwater. The over-pressure valves on all Carter Bags are designed to adequately vent the air from a fully charged bag on a free ascent from any depth. The Carter Open Bottom Lift Bags are available in multiple lift capacities from 25 lbs. to 12,000 lbs. (11.36 to 5,454.55 kg), measure (W x H) from 15" x 20" to 96" x 136" (38cm x 50.8cm to 243.8cm x 345.4cm). The Carter Bag 50, 100 and 200 lbs. bags are yellow in color and come equipped with a durable brass bolt snap. The 300 to12,000 lbs. (136 to 5,454.55 kg) bags are white in color. The 12,000 lbs. (5,454.55 kg) bag is also equipped with a brass quick-disconnect fitting attache