Acrylic balls are made 100% from acrylic. Clear balls are simple and just look like a glass ball. 65mm - 6.2oz - great for beginners, small hands person, and  multi-ball juggling performances. 68mm - 7.4oz - great for beginners, small hands person, and  multi-ball juggling performances. 70mm - 7.8oz - great for beginners, small hands person, and  multi-ball juggling performances. 76mm - 10.2oz - great for single and multi-ball juggling performances. 90mm - 1lb 1oz - great for single-ball juggling performances.  100mm - 1lb 7.4oz - great for single-ball juggling performances.  120mm - 2lb 8.2oz - great for single-ball juggling performances.