Properties: The Nike Track Backpack is a functional backpack designed with athletes in mind. A durable spike pocket, recovery accessory straps and an insulated snack pocket ensure everything you need before and after your run is close at hand. A waterproof pocket keeps valuables safe. Key Features: Durable track and field spike pocket Straps for regeneration accessories Insulated pocket for hot or cold snacks Waterproof pocket for valuables Technical specifications: Material composition: 100% polyester (body and lining)