Fitness Republic Stability Ball with Pump (Exercise Ball / Gym Ball) Advantage: Fitness workout with a stability ball helps improve your flexibility, strengthen core muscles, and enhance balance and coordination 55 cm Ball is suitable for anyone between the height of (4'11" to 5'4") Made Type: Made up of anti-burst high quality material which can support up to 400 Pounds Weight Manufacturers Warranty Included (12 Months) Money back guarantee: If you are not 100% satisfied with your purchase