BodyAssist Wellness Ball To build fitness, wellness, co-ordination & agility. Great value fitness ball in 3 sizes and colours. Choose your ideal ball size and get on the road to fitness in the privacy of your own home. Do sit-ups, warm-ups, toning, stretches and numerous other activities. It's fun and healthy. Go for it! For slow impact exercise & flexibility. Great abdominal workout. Anti Burst. Rehabilitation after injury . Builds a stronger back. Develop balance & stability. Ergonomic seating. Suits all ages. Includes free pump.