Rope Jumping Spots display and tell students the proper activity at each station. Now you can move around the class and give individual attention to students who need your help, while everyone else continues their exercises. Jumping improves cardiovascular performance, increases muscle tone, burns calories and builds endurance. Hot Spots are 8-1/2" in diameter and are made of durable, heavy-duty thermoplastic. Set includes 12 unique station Rope Jumping Spots.