1.PE,LDPE enviromental material, No pollution 2.Low price, delivery fastly, long service life 3.Can be used in pool ,water PE ... .LDPE plastic Transparent ball available size: 3.8cm, 4.6cm, 5cm, 5.5cm, 5.8cm, 6cm, 6.5cm, 7cm, 8cm.10cm, 12 ... with our product.Product photo: PE,HDPE Transparent Hollow ball(3.8cm,4.6cm,5cm, 5.5cm,5.8cm,6cm.6.5cm,7cm)