The Gilbert Gripsure is an outdoor pro ball & can be used a very high level due to its superior construction delivering excellent levels of grip, durability & feel. Using a quality ball like this improves your game in terms of speed & accuracy. Featuring a top grade natural rubber surface & multi-laminate construction with Gilbert grip configuration this ball will only leave your hand where you intend it to go & make shots more accurate with a reliable flight. Also features a performance butyl bladder with hydrate technical fabrics & external waterproof laminations combined to enhance the life & performance of balls delivering consistent inflation & feel. Ball maintenance is an essential top prolong the life & performance of these high quality balls & in turn the quality of your game. Please clean the balls before use to remove any residue from the surface of the ball. Cleaning should be carried out using warm water, a light detergent & a soft cloth. Please do not sit on the ball as this causes them to go out of shape. The balls should be stored in an ambient environment & kept dry after they have been cleaned. Check the pressure of the balls regularly to ensure optimum performance. Slight variations of ball pressure can occur over time due to the natural materials used in the bladder & changes in the external climate.