You just found a 50lb davenport anchor and can't figure out how to get this prize back to the surface. You need a lift bag. You never know what you're going to find on a dive that is worth money, so always pack a lift bag when you go diving. XS Scuba offers 50lb (22.68 kg) Lift Bags with a unique anti-spill bottom with baffle to allow easy filling from any device and to prevent the bag from dumping air or taking on water when it hits the surface.
The bag is equipped with an over pressure relief valve (OPV) with pull for manual release of air, has a stainless steel D-ring at the top for attachment of a slate, strobe or light, and an elastic loop at the top for attachment of chemical light; all to improve surface visibility. Inflation of the bag is made easy with the combination of an oral and BCD Quick-Disconnect Inflator Valve. The lift bag has lifting straps with a stainless steel D-ring at the bottom to attach rigging.
Features a lifting handle at the top for easy retrieval from a boat or dock and is manufactured with durable urethane-coated nylon. Rolls up to a compact size for easy storage.