MIKASA Smile Valley 4 Recommended Internal Pressure No. Yellow/Pink VS160W-Y-P 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. 160g (standard certified No. 4 ball/240-260g) Diameter: Approx. 20cm Recommended internal pressure: 0.10-0.15kgf/cm2 Material: EVA (special sponge)