The Karrimor ReFuel 2+2 Hydration Pack comes complete with a 2 litre HYDRAPAK bladder. The RCT back system keeps the bag compressed and under control when running, biking or skiing. It features a small 0.5 litre stash pocket and an external helmet holder. Key features include: Hydration Pack, Capacity: 2+0.5L, Back System: Refuel chassis technology, Contact Mesh: Coolmesh, Pockets: Zip access to main compartment, Hydration: complete with hydropak 2l bladder, Karrimor branding, Fabric: KS p450, Weight: 100g.