Summit Treestands Universal Backpack System Green. Load adjuster straps on top can be fine-tuned. The seat can be used as lumbar support during transport. This system allows you to more quickly quietly and comfortably carry attach to and detach from your treestand. Specifications for Summit Treestands Universal Backpack System: Manufacturer: Summit Treestands Color: Green Length: 21 in Width: 9.5 in Height: 6.5 in Features of Summit Treestands Universal Backpack System: Breathable padded mesh backpack base and shoulder straps for tree stand Quick-attachment buckles with neoprene sleeves Backpad 9.5? W x 6.5? H Shoulder strap pad: 17? L x 3.25? W Backpack base and Load Adjuster strap length: 21? Package Contents: Summit Treestands Universal Backpack System Summit Treestands SU85310: Universal Backpack System Green