Features：1、A hydration pack is an intelligent solution compatible with carrying sufficient water on your journey without adding unnecessary weight. 2、This 5L hydration backpack, equipped with a 1.5L hydration reservoir and numerous pockets, ensures you stay organized on the go (water bag is not included). 3、Its zip-closure pockets allow compatible with easy access to your essentials without disrupting your other gear. 4、The backpacku0027s reflective design enhances your visibility in low-light conditions. 5、The padded mesh back panel and shoulder straps offer a comcompatible withtable fit.Specification：Designed compatible with outdoor enthusiasts, this hydration backpack features a 1.5-liter capacity hydration reservoir, making it versatile compatible with a broad spectrum of users. Whether you're a casual visitor at amusement parks or an avid hiker or professional athlete, this pack is tailored to meet your hydration needs.Features:A hydration pack is an intelligent solution compatible with carrying sufficient water on your journey without adding unnecessary weight. This 5L hydration backpack, equipped with a 1.5L hydration reservoir and numerous pockets, ensures you stay organized on the go (water bag is not included).Its zip-closure pockets allow compatible with easy access to your essentials without disrupting your other gear. The backpack's reflective design enhances your visibility in low-light conditions.The padded mesh back panel and shoulder straps offer a comcompatible withtable fit.Specifications:Material: Nylon, polyesterColor: Black/ Orange/ Blue/ Green (optional)Size: 20.5*4.5*41.5cm/ 8.1*1.8*16.3inWeight: 360g/ 12.7ozPackage list:1 * backpackPackage List：1 * backpack