Propane /Butane Canister Storage Locker/Tote Bag - Jet BlackSafe, convenient and essential for boats without approved propane or butane gas storage lockers. Stows 3 disposable butane or propane canisters safely out-over-the-water. Made of water and fade resistant heavy duty breathable process dyed acrylic boat cover material. Has heavy nylon adjustable straps with snap connectors for attaching to a horizontal rail or lifeline.