Hydration pack(water bag, water pack, water bladder, water carrier, bike bag)
Hydration pack  
Material: 210d Oxford
Size: 44x19x5cm
Feature:  
1. One zipper main compartment w/inside padding pocket to hold reservoir, and keep the water cooler for hours
2.70 oz / 2.0 Litre Reservoir
3. Zippered slat pocket holds keys, ID, and cash
4. Removable waistbelt offers the option to use it for added stability or stash it away