Specification AgeRangeDescription : Adult BackpackDesign : framed_backpack Brand : YOUGLE BulletPoint1 : 【Lightweight For Running】This race vest is specially designed for running/road biking/hiking. The weight of the backpack is 115g/4.06oz, capacity 2.5L which is super light, which reduces a lot of burden during running. It has a compact structure and a low profile shape. It feels very light and stable on your back, and does not produce a lot of wind resistance. Whether you are training for a marathon or riding a bicycle, you can maintain your best body condition. BulletPoint2 : 【Maximum Comfort】The hydration backpack is made of nylon four-way stretch fabric, which is highly elastic and skin-friendly. The chest bandage adopts an adjustable design, which can fit the body well and maintain a high degree of stability and comfort. Soft mesh on back and shoulder straps maximize breath-ability. BulletPoint3 : 【Versatility】There are enough pockets and pouches to store items like cell phones, keys, thin raincoat, 500ml soft water bottle, hydration bladder, and other items for outdoor activities. BulletPoint4 : 【Fit You Well】Ergonomic designed vest-shaped bag comes with an adjustable waist strap and high elastic chest strap, three sizes for your option: Size:S/M suitable for bust 30.3-33.8 in, M/L suitable for bust 32.8- 36in, L-XL suitable for bust 40-45in. BulletPoint5 : 【Perfect Outdoor Gear】The hydration pack is your perfect choice for cycling, camping, running,music festival, rave , kayaking. A decent Holiday Gift for families and friends who love outdoor sports. Capacity : 2.5 liters CareInstructions : Machine Wash Color : Turquoise with 2*500ml Soft Flask CompatibleDeviceSizeMaximum : 21 centimeters Department : unisex-adult ExternallyAssignedProductIdentifier1 : 821468855809 ExternallyAssignedProductIdentifier2 : 0821468855809 FitType : Regular GpsrSafetyAttestation : 1 ImportDesignation : Imported IncludedComponents : RUNNING VEST ItemDisplayDimensions_Length : 43 inches ItemDisplayDimensions_Width : 1 inches ItemDisplayWeight : 3 ounces ItemName : 2.5L Hydration Backpack Vest Running Race Vest Breathable Lightweight Pack for Cycling Hiking Camping (Turquoise with 2*500ml Soft Flask, S/M) ItemPackageDimensions_Height : 31 centimeters ItemPackageDimensions_Length : 5.6 centimeters ItemPackageDimensions_Width : 26.6 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : sports-hydration-packs LiningDescription : Polyester Manufacturer : AONIJIE Material : 75% Nylon, 25% Spandex ModelName : C932 ModelNumber : . NumberOfCompartments : 3 NumberOfItems : 1 NumberOfPockets : 4 PackageLevel : unit PartNumber : FAE89BY7 Pattern : Solid PocketDescription : Utility Pocket ProductDescription : Features: Ergonomic designed vest-shaped bag coming with adjustable waist strap and high elastic chest strap,three sizes for your option. Specification: Color: Black, Turquoise, Orange Capacity: 2.5L Material: 75% Nylon, 25% Spandex Weight: 115g S/M: Chest Circumference 77-86cm M/L: Chest Circumference 83.5-92.5cm L/XL: Chest Circumference 89.5-98.5cm