The wildland GENFO 45 Back Pack extinguishing system is collapsible and made of durable polymer and textile components that are Thermo Welded into a 4.5 gallon tank. Heavily reinforced to protect against puncture, it features an, internal baffle to prevent excess water movement during use and a large 4" fill hole utilizing a threaded polymer cap. The pump is dual action for continuous water flow and has a nozzle tip which is adjustable from straight stream to spray pattern. The hose is 40" long attaching with brass fitting to the pump. Each backpack incorporates a carry handle and shoulder straps for easy transportation. Empty, each backpack weighs 4 lbs and measures 19 1/3"L x 25 1/2"H x 1"D. A Foam Tube attachment is available and is sold separately.