A fun and challenging way to improve your core strength, physical control, and increase your stability and coordination Durable with non-slip top Measurements are 39.5cm x 39.5cm x 7.8cm Max user weight is 150kg A fun and challenging way to improve your core strength, physical ...A fun and challenging way to improve your core strength, physical control, and increase your stability and coordination Durable with non-slip top Measurements are 39.5cm x 39.5cm x 7.8cm Max user weight is 150kg A fun and challenging way to improve your core strength, physical control, and increase your stability and coordination. Durable with non-slip top. Size: 39.5 x 39.5 x 7.8cm Max User weight: 150kg