1EVA: Made of EVA material, the foam golf ball is environmentally friendly, non toxic and safe, and can be used with confidence. 2No Injuries: The diameter of the EVA golf ball is 21.5mm/0.8in, the weight is very light, and it won't hurt people. 3Indoor Use: The soft foam practice ball is very suitable for indoor swing practice, does not fade, and has good resistance to hitting and abrasion. 4Outdoor Use: These foam golf balls are brightly colored, so you can easily find them on the grass when practicing outdoors. 5Quantity Guarantee: A total of 30 golf balls are included, which can satisfy your swing practice without worrying about damaging your furniture or hurting people. Item Type: EVA Foam Golf BallsMaterial: EVADiameter: Approx. 21.5mm / 0.8inProduct Weight: Approx. 18g / 0.6oz This ball is soft, suitable for indoor swing practice, will not hurt people, even if it is hit, it will not hurt. 30 x FoamGolfBalls