Heavy Duty 60 liter South African style inflatable float. Designed and built by SpearMaster. It is a high pressure float designed to perform at 20psi. A 20 psi float (when inflated to max pressure) will maintain the same buoyancy to a depth of nearly 2 atmospheres. Most other Spearfishing Floats available on the market will loose buoyancy at less than a single atmosphere.