Sport-Thieme "Gym" medicine ball, available in different weights for personalized training / The modern design of the Sport-Thieme "Gym" medicine ball features an ultra-resistant rubber cover that makes it particularly robust. The grained surface structure gives this model optimum grip, even during sweaty workouts. The needle valve allows you to vary the air pressure at any time using a standard pump, thus achieving the desired rebound characteristics. Maximum permissible pressure is 5 bar / Weight: 6 kg / Material: Rubber / Filling: Air / Color: Light green / Diameter: 23.9 cm