MIKASA Smile Lesson Size Recommended Internal Volleyball, 4, 210g, White/Green, VS210W-W-G, Pressure 0.10-0.15 kgf/cm²

The surface is made of sponge, the same material as a kickboard! It's soft so it doesn't hurt when you hit it! Easy to hit! This ball can be used by everyone from children to seniors! Weight: Approx. 210g (normally certified No. 4 ball: 240-260g) Diameter: Approx. 20cm Recommended internal pressure: 0.10-0.15 (kgf/cm2) Material: EVA material