Hydration Pack 3LDeluxe hydration system with narrow design that allows carrying on back or stowing in larger backpack. Well insulated and suitable for all types of weather. Save space and avoid schlepping this bulky item from home! Backpack with shoulder straps Separate bladder with large, round opening for water and ice Extra space for keys, other items Measures ~41" height x ~8" width Weighs 0. 9 lb empty Picture is for illustrative purposes, style and color may