The Backpack Pump was designed by a firefighter who understands how uncomfortable a leaky backpack pump can be. While this product is new to the web site it is not new to long harsh fire seasons. With more than 3 seasons of field testing this system will not let you down. No more wet diaper feeling from leaks running down your back. The hand pump is attached with a standard garden hose connection. The hose end is fitted with a female garden hose fitting allowing the user to efficiently refill from a standard residential hose bibb or wildland tee valve (GH to IP adapter required) if needed. Brass single stage hand pump included. Features 25 Liter (6 gallon) capacity Oversized shoulder pads for maximum comfort Removable aluminum stays provide extra support or remove to fold for storage. Fill the reservoir at the Wide Mouth opening or the female garden hose fitting on the end of the hose MOLLE covered exterior for attaching tools, pouches, etc. Specifications Dimensions: 18" x 5" x 25" (W x D x H) Volume: 6.5 Gallons / 25 Liters Weight: 6 Pounds / 2.7 Kilograms Material: 1000 D Cordura Nylon Fabric Nylon 6.6 Webbings and Buckles Certifications ISO 9001 Quality Manufacturing