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Stability Ball™ with pump - 55cm (blue)

Stability Ball™ with pump -  55cm (blue)
Stability Ball™ with pump - 55cm (blue)
Stability Ball™ with pump - 55cm (blue) 0.0 0 Be the first to add a review
SKU : ST06034
$38.99 (US)
$38.99 (US)

Challenge your deep stabilizing muscles through active sitting and during your workouts to improve your balance, develop strength and enhance your muscle tone. The 55 cm (22") Stability Ball creates a plane of instability forcing joints and muscles to react to maintain balance, challenging coordination and improving your posture. After exercise, reduce muscle soreness and develop flexibility by using the ball to stretch and lengthen your muscles.

  • Ideal for those 4'11" to 5'3"
  • Anti-burst up to 550 lbs
  • Includes BONUS Exercise Guide & hand pump
  • Latex free & non-slip ribbed surface
  • See FAQs for help choosing your correct size, how to inflate, and how to clean & care

Also available in:

  • USES
  • FAQS

Workout While Sitting

The Stability Ball is a great for improving your posture and strengthening your core and back at home or office. Through active sitting, challenge your core to support the spine and maintain balance on the ball. Learn about how to choose the right height in the FAQ tab.

Add Dynamic Challenge to Your Workouts

The Stability Ball adds challenge to your workouts by providing a plane of instability that forces joints and muscles to react to maintain your balance. Workout the lower body with exercises like Wall Squats, the upper body in Balance Planks, and the Core with V-Sit Ups. Find great workouts here.

Stretch Out & Improve Flexibility

The Stability Ball is a great tool for a post-workout stretch or any time tension has you stiff and sore. Stretching increases your flexibility and range of motion, and also relieves the lactic acid that builds up in your muscles during your workouts. Find great stretches here.

Repair Back Pain & Improve Posture

Back pain is often the result of having weak stabilizing muscles supporting your joints. Without muscular support, your joints simply collapse. The Stability Ball is effective in rehabilitating your back because it strengthens and develops the core muscles that help to stabilize the spine. Find our Secret to a Strong Back here.


Diameter: 55cm (22")


  • Anti-burst polyvinyl
  • Latex free & non-slip ribbed surface
  • Includes hand pump

See FAQs for:

  • How to Choose the Correct Size
  • How to Inflate
  • How to Clean & Care

How do I choose the correct size ball?

A Stability Ball, when sized properly, makes for an active chair when sitting at a desk, keeping your core engaged, preventing and rehabilitating back injuries while improving posture. The general guidelines in choosing the correct ball size are:

4'11" to 5'3" height 55 cm ball
5'4" to 5'11" height: 65 cm ball
6' to 6' 7" height 75 cm ball

Deflate the ball until your body is aligned so that when sitting your knees are at a right angle and your thighs parallel to the ground. If you are close to a cut-off point, opt for the larger size and deflate accordingly (this will also lead to a more comfortable chair).

For step by step instructions check out this helpful WikiHow.

How do I inflate my ball?

  1. Remove plug from ball with double pronged lifter
  2. Attach plastic needle to pump (on some pumps the needle is stored in the handle; remove small plug on end of plunger to locate storage compartment)
  3. Insert needle, inflate to desired firmness and replace plug

Note: For full inflation inflate ball, allow to rest for 2 days, and then complete inflation to ensure that ball is the proper size.

How do I clean my ball?

If necessary, clean dirty spots with a combination of tea tree oil and water on a lightly moistened cloth. A mixture of mild soap and water can be used to remove more persistent dirt. Ensure cleaner used does not make surfaces slippery and that ball is completely dry before using.

How should I care/handle?

  • Maintain control of the Stability Ball at all times while exercising
  • Do not use Stability Ball if it appears worn or damaged.
  • Keep away from sharp objects
  • Never use corrosive cleaning products

30 Day Returns

Within 30 days of receiving your order, this product may be returned for a full refund, exclusive of shipping, provided it is unused and in its original condition. For assistance email returns@merrithew.com


At MERRITHEW™ we craft and source our products with pride, delivering durable and safe to use goods that we stand behind. If you receive a defective product, MERRITHEW will replace at no cost with proof of purchase. Read our complete warranty terms and conditions.


MERRITHEW serves the globe shipping within the US, Canada and many oversea destinations. For orders of large equipment or over $600 in value, a separate shipping quote will be sent to you within 24 hours of your order. We are happy to provide you various Standard and Express shipping methods options at the check-out. Please see Distributor Territories below for International Shipping.

Distributor Territories

MERRITHEW sells on a direct basis to most countries around the world. To provide better local service, we have partnered with distributors in select countries.

If shipping to any of the countries below, your local distributor will be happy to assist you with your order.

Australia France Mexico
Brazil Germany New Zealand
China Greece Philippines
Cyprus Italy Turkey

Have questions? We’re here to help contact us at retail@merrithew.com

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