MIKASA Smile Valley No. 4 Yellow/Blue VS160W-Y-BL Recommended Internal Pressure 0.10-0.15 kgf/cm2

The surface is made of the same sponge material as a kickboard! It's soft, so it won't hurt when you hit it! It's easy to hit! This ball is suitable for everyone from children to seniors! Weight: Approximately 160g (standard certified No. 5 ball: 240-260g) Diameter: Approximately 20cm Recommended internal pressure: 0.10-0.15kgf/cm2 Material: EVA special sponge Category: Unisex-Youth