Description: 【Comfort】: This Hydration Pack is a lightweight, breathable backpack, comfortable to wear during outdoor activities like cycling, running, or hiking. Made of nylon cloth that is lightweight, comfortable, and resistant to wear and tear. 【Reflective Design for Safety】: The hydration backpack has a reflective design that enhances visibility in low light conditions making it for night time activities. Size 25cmx6cmx39cm/9.84inchx2.36inchx15.35inch. 【Organized Storage】: This hiking backpack can accommodate your essentials while keeping them organized, holds cell phone, keys, water bladder, etc. NOTE: Not Included Water Bladder. 【Convenient Design】: The backpack features convenient side storage pockets and a top handle strap design for easy carrying by hand when needed, great for long outdoor adventures. 【Adjustable and Versatile】: It features quickly disassembled and adjusted making it easy to use. Hydration Backpack is designed to fit snugly against your back for maximum comfort and flexibility. Specification: Material: Nylon Cloth Size Chart: 25cmx6cmx39cm/9.84inchx2.36inchx15.35inch Package Includes: 1 Hydration Pack (Not Included Water Bladder) Note: Please allow slightly errors 1-2cm differences due to manual measurement.