Magma Propane/Butane Canister Storage

Safe, 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 nautical blue polyester boat cover material. Has heavy nylon adjustable straps with snap connectors for attaching to a horizontal rail or lifeline.