Compact Hydration Backpack: Nepest lightweight hydration pack made of 100% Nylon features anti-tear and wear-resistant. Ultralight hydration packs only have 0.64lbs, high quality ultra light design, let you travel without pressure Wide Multiple Storage: The hydration vest main water compartment suits for 2L water bladder. Front zipper pocket for storing your various outdoor essentials, besides, an additional small front pocket can store phone or keys small items for easy access Comfortable & Adjustable: Rave hydration pack constructed with an ergonomic breathable and soft padded back panel to make you more relaxed, adjustable shoulder straps with adjustable sternum and waist straps providing ultimate comfort by taking the weight off your back, made for comfort, and perfectly adjustable for all sizes