The Gilbert ® Pulse Netball is the best-selling netball around the World. It's a great value entry level training and match ball. Size 5 is recommended for players aged 11 and over.Inflate using standard pump (not included)Product Care: Check PSI before each use. Avoid rough surfaces. Do not sit on balls. Rotate balls in your kit to ensure even usage. Inflation: Pull into shape moisten needle inflate to recommended PSI.