The cube pure 30 backpack gives you enough room to take everything you may need on a ride whether you39re commuting to work and need room for a spare change of clothes or you39re on a weekend adventure and need more than just cycling essentials this bag will cover you the pack is lightweight and is compatible with hydration systems so you can turn this backpack into a hands free hydration device the bag has mesh front and side pockets for easy access to your stuff it also has a