Design and Details: Quick access zip pocket Trolley sleeve Reflective accent Wide opening main compartment access Breathable back panel and shoulder straps Front stash pocket Hydration sleeve and pass-through Removable waist strap Stretch side pockets Specs: Weight: 1 lb. 5 oz. / 595 g External dimensions: 20 x 11 x 7.5 in. / 51 x 28 x 19 cm Internal capacity: 1650 cu. in. / 26 L Materials: 100% Recycled 400D polyester ripstop; 420D nylon; 200D polyester