The Miracle Box - High Quality Anti Burst Gym Pilates Yoga Birth Ball. Suitable for all ages, this exercise ball is recommended for 165 cm and over. The ball can be used by professionals and home use due to its high quality technology. Gym balls can help strengthen, rehabilitate and tone muscles throughout the whole body including your bodys core muscles which are so important for good posture. Due to the thickness of the anti-burst technology, the ball will require inflation in a warm room to enable the ball to stretch to its full capacity. High quality anti burst birth ball. Tested and certified anti burst exercises ball. Suitable for all exercise routines for all ages. Anti slip technology. Measure tape and plug remover also included. Ball, plug, plug remover, tape.