Lightweight Hydration Backpack with Water Bladder Suitable for Outdoor Hiking Running Cycling Camping Climbing Sports Perfect for Men Women KidsHydration Backpack is your best when it comes to keeping hydrated while doing the things you . Stay focused on your activities and still from fresh water, keeping you hydrated in the most convenient way!Features:First-class Material: This hydration backpack is made of waterproof and -scratch polyester fabric for ultimate portability and durability. Food grade material is used for the bladder.Large Capacity: Multiple compartments and inner pockets provide ample room for your outdoor essentials including additional clothing, sports towels, water bladder, tools kit, flashlight, gloves, cellphone, wallet, keys and etc.Ultimate Comfort: Breathable air system keeps your back cool and dry; Soft cushions on the rear of the backpack comforts your back; Adjustable s-shaped shoulder straps perfectly fit your body.Safety in Mind: Reflective safety tabs for high-visibility in low-light environments, and plus emergency whistle on the strap to keep you safe for most extreme environments & weather conditions.Multipurpose: Large capacity backpack with water bladder is suitable for hiking, running, cycling, camping, climbing, travelling, school and any outdoor activities.Specification:Material: Polyester + TUPColor: Rose / Blue / Purple / Black / Red / Green / Orange (Optional)Size: 48 * 22 * 22cm / 18.9 * 8.7 * 8.7in (15L)Weight: 680g / 1.5lbNotes:1.Please allow 1-3cm differs due to manual measurement.2.Due to different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.Package Includes:1 * Hydration Backpack 1 * Water Bladder