The Wilson Sporting Goods Tennis Ball Pick Up Hopper is a must for the tennis court. It's spacious enough to hold 75 balls and has a sturdy no spill lid. This Wilson ball hopper is made of lightweight graphite that makes it easy to transport. This portable tennis ball basket offers handles that conveniently convert to lockable legs. The hopper is made of durable plated steel construction for a long lasting product to use on the tennis court.