55CM EXERCISE BALL ON THE GO: 55cm is the maximum diamater after inflation.1000 micrometers in thickness. Recommended for users doing exercise between 5'2" and 5'7" tall. VERSATILE USE: Use the fitness ball to build up your core strength in physical therapy and exercise your knees, legs, arms. Not only can pregnant women use yoga balls to help in birthing, but it can also be used as chairs in office. STABILITY TEST: Inflate the exercise ball to the specified size, press at least 660lbs on the surface of it, and continue static pressure for 1h. After the test, the ball does not burst. ANTI-BURST: Inflate the yoga ball with the pump and place it under the pressure of 120kg. Pierce the ball with a 2mm diameter iron needle. It will not explode immediately within 30 seconds. ANTI-SLIP: Corrugated anti-skid ring. Strong honeycomb design. Matrix massage points. Non-toxic PVC.
LUSHENA Large Exercise Ball 55cm 65cm 75cm Extra Thick Office Yoga Ball with Pump for Women Pregnancy Birthing Fitness Home Gym Workout - B08MU4LA6