Cando firm medicine ball, 5-piece set (1 each: 2, 4, 7, 11, 15 lb.) color coded plyometric balls available from 1 to 30 pounds. Balls have firm rubber exterior shell and uniform weight distribution. Balls have easy-to-grip rubber surface. Balls can be used with trampoline rebounder and thrown back and forth with a partner. Firm ball – 5 piece set – 1 each: yellow, red, green, blue, black (2, 4, 7, 11, 15 lb.)