Speaker in the mesh pocket, water bottle in the side pocket, toiletries in the small zip pocket. Check, check, check. Use this adidas backpack to keep track of your training must-haves so that you arrive at the gym with everything you need. Its durable base is built to withstand daily wear and tear. Side slip-in pockets Air mesh on shoulder straps and back panel Volume: 29.5 L 100% recycled polyester plain weave Versatile backpack Front zip pocket and front flap pocket