The image of multiple balls is for illustration only. Kit includes 1x balance ball, workout DVD and Pump. Our remarkably versatile and universally popular BalanceBall is a fun way to add motivating new options to your fitness routine. Makes non-impact strength and flexibility workouts fun and easy through a fusion of yoga and Pilates movements using the renowned BalanceBall. "Three size options are available to ensure ball size matches users height for best results: Small 55cm - for users 150-165 cm Medium 65cm - for users 166 - 180 cm Large 75cm - for users 181 - 190 cm "Includes a total body 50 minute workout by certified instructor Suzanne Deason "Also includes 2 BONUS workouts - Daily Stretch (14 min) and BalanceBall Stress Relief (6 min) "Anti-Burst to 136 kgs construction for safety and durability