Very versatile backpack! It holds my tennis shoes in the bottom compartment designed for shoes. I'm able to safely secure 2 tennis racquets with the Velcro straps in the back pocket. I'm also able to put in at least 3 cannisters of balls, each one containing 3 balls a piece in the middle compartment. I purchased this one for my boys who recently started playing tennis. I'm able to keep 1 full-size soccer ball in one of the middle compartments without any issues. The best part is, there is still plenty of room to keep extra clothes inside! Quite frankly, the best feature that this bag has is the built-in hook (on top of the bag) that allows me to hook my bag onto the fence instead of laying it down on the ground.I purchased one for myself and have been using it for several weeks now - instead of a soccer ball, I keep a full-size basketball in mine. I've been enjoying this bag for any multi-sport athlete. No regrets for this happy customer here!