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Stel'Air Stability Balls VC-679
Stel'Air Stability Balls VC-679
Stel'Air Stability Balls VC-679
Stel'Air Stability Balls VC-679
Stel'Air Stability Balls VC-679

Stel'Air Stability Balls VC-679

Regular price $46.46 $46.46 Sale

Stel'Air Stability Balls

Anti-Burst Stability balls for exercise are 100% guaranteed not to burst. Each ball comes with its own hand pump.

The Exercise Stability ball is maximum rated for persons under 250 lbs. For persons who weigh more it is not recommended to sit on the ball.

The stability ball can be used for several exercises that do not require sitting. Exercises such as wall squats and ball rolls will still work the legs, abs and core effectively.

For active seating and fitness exercises the Stel'Air stability ball can be used to work all muscles in the body. Active seating on the ball means there is core muscle engagement with small micro-muscles as well as larger muscles during fitness exercises.

Stel'Air Stability Ball Features

Two common sizes for the stability ball are 55CM (21.65 inches) and 65CM (25.59 inches). These suit most heights as seen in the chart.

The balls are used to improve muscle development, stability, strength, and flexibility. Improvement on these help with all skill levels and helps to increase agility needs especially needed in the later years.

  • Easy to use at the office, gym, and home.
  • Hand pump included for quick inflation.
  • Best guarantee, made of quality grade material.
  • Comfortable slip resistant material.
  • Clean simply



Commonly the sizes for exercise stability balls are 55cm, 65cm, and 75cm. If your height is just shy of choosing a larger size then usually it is recommended to buy the larger one. You can always under-inflate a larger stability ball.

When blowing up a exercise stability ball it is preferred if you do so in two stages. Stage one is to inflate to just where the material begins to be tight. Allow to "rest" overnight and then the material should be relaxed enough to inflate all the way.

Height Ball Size
5'0" to 5'5" Small: 55cm/22"
5'6" to 5'11" Medium: 65cm/26"
6'0" to 6'3" Large: 75cm/30"


The measurements sizes recommended are when the ball is inflated. The ball will expand when you sit on it so you may find you have to add more air for comfortable use.

You can calculate the diameter of the ball by using the following formula.

circumference divide by Pi (π) or Circumference/3.14 = 55 or 65.

Another way to measure the size is to place a mark on the wall and inflate to that point. The height of the ball is for proper body alignment for exercises.




Stel'Air Anti-Burst Stability Exercise Ball Accessories & Parts

  • Hand Pump
  • Stability Ball Plug
  • Mesh Cover



Stel'Air Stability Ball FAQ's

How to choose the correct size exercise ball

If using the ball as a chair the ball should be inflated more than if being used for exercises. When seated for long periods it is healthier to have the legs at a wider angle from the body for improved breathing and digestion.

With the ball inflated more the hips will be above the knees. This opens the hip joint to help reduce the strain on the internal organs that long term sitting can do.

When exercising the legs at a 90 deg angle will keep the knees and hips in alignment. The thigh is parallel to the ground so exercises like abdominal crunches effectively engage the core and are comfortable.

How to inflate a fitness ball

When you first get the stability ball in the mail it will be folded into a small box. Especially important in the winter is to open the box and allow the ball material to warm up to room temperature before unfolding.

Once the ball has warmed up then inflate the stability ball just to the point where the material begins to stretch slightly.

Leave the ball to rest at that point overnight before filling to the desired size.

DO NOT over-inflate.

How to repair a leaking stability ball

If there is a flaw in the stability ball from manufacturing it will show up right away. Common reasons for losing air is the ball plug isn't in tight enough or there is a small hole somewhere in the material.

Depending on the amount of use it is not unusual to have to add air to the ball on a weekly or monthly basis.

Keep the ball use in a clear area to avoid possible sharp objects. Also make sure your pockets don't have anything that can puncture the ball material.

If for whatever reason you have a damaged ball, it cannot be repaired safely.

Caring for your Stel'Air Stability Ball

  • Use on a smooth and level surface. Do not use on gravel or dirt.
  • Balls are easy to clean with warm water and a little mild soap. Be sure to thoroughly rinse soap off and dry with an absorbent towel by lightly patting.
  • Be sure to empty trouser pockets prior to use especially things like keys and pocket knives.
  • Any scratch or nick in the ball material can compromise the safe use of the ball and should be replaced.
  • Keep the ball away from heat sources like a radiator and away from open flames.
  • When not in use, store the stability ball out of direct sunlight.
  • Individual use only. This item was not intended or designed for multiple-users.

*Please Note* - colours in the photographs may vary slightly from the actual stability ball and the hand pumps may vary in style.