On court off court pop-up Target measures 25 in x 53 in and helps children to focus their attention on a target instead of the whole other side of the tennis court. Target is made of impact resistant nylon and features a durable metal pop-up frame that easily folds down into 15 in storage bags. Target has 22 in diameter opening that allows children to hit more accurate shots. pop-up can be easily attached to a tennis net with the attached Velcro. Set includes 2 pop-up Targets (1 red, 1 blue).