Hydraulics 3L Reservoir Size:One Size and we've included 1 brush

and we've included 1 brush holder and 1 pocket to store car keys and other essentials while out pebble wrestling

If you're looking for a simple pack that provides excellent comfort

lightweight material won't weigh you down and absorbs less water than nylon

breathable Merino

Hydraulics 3L Reservoir Size:One Size and we've included 1 brushOsprey's Hydraulics 3L Reservoir by Hydrapak is ideal for large volume packs and long duration activities. The HydroStatic backerplate provides structure for easy loading into a full pack and maintains a flat profile. Thoughtful design makes filling, cleaning and most importantly staying hydrated on the trail easier than ever.