With the help of the Deuter Attack 18 SL Backpack, you can make sure that you have all your essentials and then some. 18L of storage will make sure that you have all the tools and supplies that you need for long rides or hikes. This pack also has the capability to support a bladder of your choice making sure that you have enough water for long days. Strap up and enjoy this awesome pack today and love the ride.