Everyone could use a good all around backpack to use for any occasion. The Black United By Blue 24L Arid Backpack is just that. It has pockets for everything, including a TSA friendly laptop compartment that will help cut down your time in security. This highly functional backpack has a water repellent finish so you can use it rain or shine. For every product sold, United By Blue will remove one pound of trash from oceans and waterways.