Kriega Hydro 3 Hydration Backpack Features 3-litre reservoir 1-litre side access zip pocket Removable waist strap Unique Quadloc harness: adjustable back length with total arm freedom Side access pocket Removable waist strap Superspace: 5mm airspace back YKK water-resistant zips Hypalon: abrasion resistant re-enforcement Schoeller Dynatech with integrated 3M Scotchlite 420D nylon ripstop: lightweight yet extremely strong 3M Scotchlite: reflective logo LED rear light mounting loop 400mm H x 170mm W x 70mm D (15.7 H x 6.7 W x 2.8 D)