Comtents: 7 cm Massage Ball ×5 pcs、8cm Massage Ball ×5 pcs、9cm Massage Ball ×5 pcs、85 cm Gym Ball ×1 pc、Gym Roll ×1 pc、40 cm Jumping Ball ×2 pcs、55 cm Jumping Ball ×2 pcsTo & Fro Ball ×4 pcs、Pump ×1 pc、User Gudide Book ×1 pc 1.The set contains 25 pieces of equipment in different sizes and shapes to create over 40 different activities. 2.Promotes total physical responses coordination. 3.Stimulates coordination of the head and body. 4.Promotes balance.