The Play 100mm Stage Ball is hollow and made of flexible PVC which gives the ball a great grip. This 100mm version is also suitable for contact juggling as the skin is very grippy. These balls have very high visibility and are great for performances. For a more technologically advanced (and overall fantastic) ball, we recommend the Sil-X range. Comes in UV reactive colours. Please note that these balls should be stored with different colours in different bags.