Ideal for when you are practicing your strokes and serves, fold the legs up and carry, press on top of tennis balls for them to pop in. Fold the legs down and open the top, to have the tennis balls at a convenient and reachable height. Ballport is made of durable polypropylene. No rusting, no paint peeling, no weld breaks. The Ballport Deluxe (With Wheels) has handles 4 inches longer than the Classic Ballport making it easier to reach for your tennis balls in quick succession. In addition to this we have added wheels meaning you can now pull it behind you instead of carrying it.