Welcome to our store! 1,This running hydration backpack is made of extra thick, tear resistant, water resistant and anti abrasion polyester. 2,The soft cushion at the back is composed of a porous mesh backrest and a comfortable cushion to prevent stuffiness and release back pressure. 3,There are 4 zippered pockets on the back, 1 on the bottom left, 1 on the back, and 1 on the top. It has a large capacity and can hold 15L items. 4,There are 2 adjustable length buckles on the chest, and an adjustable shoulder strap that can be adjusted according to your body shape. 5,There are open pockets on both sides of the front of the backpack, and a small zippered pocket is attached, so you can equip small items outdoors. <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Running Hydration Backpack Material: Polyester Size: Approx. 41x20cm / 16x8in Color: Blue Capacity: 15L Purpose: Outdoor Recreation <style> .wang-edit-text{ font-family:'Arial' !important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }</style> 1 x Backpack (Customer Satisfaction) - is our priority. If you notice any problems with the products after receiving the goods, such as damaged goods or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory after-sale service. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store