Osprey Berm 4Got Water?The Berm 4 is the compact choice for riders who want lightweight capacity without sacrificing comfort or features. This streamlined bike hydration pack keeps your essentials close and your back cool with the Air Scape(TM) backpanel. The included 2. 5L Hydraulics LS reservoir keeps you hydrated, while the organized pockets hold tools, snacks, and small essentials. Perfect for shorter to medium rides where you want just enough capacity. Features Air Scape(TM) backpanel with mesh-covered ridged foam for ventilation and comfort Included 2. 5L Hydraulics LS reservoir with magnetic bite valve attachment Low-profile main compartment with internal mesh pockets for organization Built-in tool organization keeps spare tubes, levers, and tools accessible Zippered front pocket with key clip for small essentials and valuables Adjustable sternum strap with magnetic bite valve for secure hydration access Reflective details and blinker light attachment for visibility on the trail SPECIFICATIONSIntended Use Mountain Biking, Short to Medium Rides Capacity4 L (plus 2. 5L reservoir)Weight~1. 2 lbs / ~0. 54 kg (without reservoir)Back Panel Mesh-covered, ridged foam (50% recycled EVA)Included Reservoir Osprey Hydraulics LS 2. 5LMaterials Bluesign(R) approved, 50% recycled EVA foam, durable fabrics Warranty Lifetime All Mighty Guarantee | Osprey | Berm 4 | Botswana Purple Dust | Hydration Pack