Osprey gets your little ones trail ready with the HydraJet 15 pack. Kid' s hiking and hydration deck. Spacious main compartment with zip closure. 1.5 L Hydraulics LT reservoir included. External pocket with zip closure for smaller items. Mesh pockets at sides for water bottles. Web loop attachment points for lashing extra gear. External bungee storage for extra gear. Front shove-it pockets for holding extra layers. BioStretch ventilated harness uses EVA foam for enhanced airflow. Padded hip wing with buckle closure. Volume: 915 cu in / 15 L Material: Main: 210D nylon double diamond ripstop Accent: 420HD nylon packcloth Base: 420HD nylon packcloth Measurements: Bottom Width: 9 in Depth: 6 in Height: 15 1 2 in Strap Length: 37 in Strap Drop: 11 in Handle Length: 6 3 4 in Handle Drop: 2 1 2 in Weight: 1 lb 2.6 oz