Specification Brand : AONIJIE BulletPoint1 : 【LIGHT WEIGHT FOR RUN】8L large capacity storage space, 8 pockets. The backpack's net weight is only 210g/0.46lb super light, reducing much of the load during the running. When it comes to running, the shorter you plan to spend on the trail, the lighter pack you'll need BulletPoint2 : 【RECOMMENDED SIZE】Recommended chest circumference: 78~115cm/30.71~45.28in. Whether you're hitting the trails for a run, biking through the countryside, or hiking up a mountain, this running hydration vest is your perfect partner. BulletPoint3 : 【COMFORTABLE FIT VEST PACK】Our hydration vest features a soft and breathable mesh and nylon fabric for comfort and efficient sweat absorption. Crafted from lightweight elastic mesh materials for a smooth running experience. The shorter length provides a close fit, keeping the pack from bouncing while running BulletPoint4 : 【MULTIPLE STORAGE COMPARTMENT】Designed with 7 exterior pockets, you can store all tiny items such as vacuum cups, keys, phones cash, etc. These pockets also allow you to get things directly, extremely convenient. Conveniently located pockets allow for quick and easy access to your essentials while on the move. Our backpack that can hold a 1.5 liter water bladder in the back compartment BulletPoint5 : 【Reflective and Safe】Equipped with reflective trim to enhance visibility and safety during nighttime outdoor activities. Includes a built-in survival whistle, perfect for quickly signaling for help Capacity : 8 liters Color : Black Department : unisex-adult ImportDesignation : Imported IncludedComponents : Backpack ItemName : AONIJIE Running Hydration Vest Backpack 8L Bag Lightweight Vest for Trail Running Race Marathon (Black, One Size) ItemPackageDimensions_Height : 1.18 inches ItemPackageDimensions_Length : 11.8 inches ItemPackageDimensions_Width : 7.08 inches ItemPackageQuantity : 1 ItemTypeKeyword : sports-hydration-packs Manufacturer : AONIJIE Material : Nylon ModelName : C9116-8L NumberOfItems : 1 NumberOfPockets : 8 PocketDescription : Utility Pocket ProductDescription : Brand: AONIJIE Name: Running vest backpack Model: C9125# Recommended chest circumference: 78~115cm/30.71~45.28in. Fabric 1: 90% nylon, 10% spandex Fabric 2: 87% nylon, 13% spandex Weight: About 210g/0.46lb Color: Green, Purple, Black Mesh Fabric: Polyester Our hydration backpack weighs 0.46 pounds and is super light, reducing much of the load during the trip. When it comes to hiking, the shorter you plan to spend on the trail, the lighter pack you'll need. Designed with 7 exterior pockets, you can store all tiny items such as vacuum cup, keys, phone cash, etc. These pockets also allow you to get things directly, extremely convenient Suit For: Trail Running, Road Running, Night Running, Cycling, Hiking, Climbing Smooth and anti-rust race vest zipper. Toughness and durable fastener.