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Domyos, Medium Swiss Ball

Sale price: $19.99 Regular price:

You'll love: - Its durability - Its versatility - Its grip You'll be amazed by: - Its comfort - Its design and new colors - The exercises that come with the ball

Color: Select a color
Size: Select a size
Sale price: $19.99 Regular price:

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Free shipping over $35

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8603634

Product Videos

Product Features

A photo of the Domyos, Medium Swiss Ball in use

Domyos, Medium Swiss Ball is designed for This gym ball is perfect for toning your body, strengthening your back, and stretching. It is available in 3 sizes (size 1, size 2, and size 3).

You'll love: - Its durability - Its versatility - Its grip You'll be amazed by: - Its comfort - Its design and new colors - The exercises that come with the ball


Extra thick to make it safer and longer lasting


Use it for fitness workouts, Pilates, stretching, and more


The shiny lines are non-slip and allow you to be more precise

Product Lifestyle Image Gallery

Image Gallery

Domyos, Medium Swiss Ball,peacock blue 

Domyos, Medium Swiss Ball,peacock blue 

Domyos, Medium Swiss Ball,peacock blue 

Domyos, Medium Swiss Ball,peacock blue

Product Customer Reviews

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164 Reviews
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Domyos, Medium Swiss Ball,peacock blue
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Bought for stretching and posture

I was recovering from a bad back and this helped me increase my movement like any ball of its type would. It was also easy to get comfortable on when other sitting and standing was painful again I guess this would be just like any other ball of it's type. It took while to inflate but the only negative I have was the smell. I think that has slowly disappeared though. Hard to go wrong with it really.

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Nice and bouncy!

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got the gymnastics ball size m

very good quality, easy to use and exactly what I expected !

Hello Petra,


Thank you for supporting Decathlon Hong Kong, your rating and feedback is much appreciated!


We are happy to hear that you have had a positive product experience with us. We wish to see you again soon at our stores.


Wish you a Happy New Year, stay healthy and strong!



Decathlon Hong Kong Fitness Team



Its good

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Very good and quality product

The ball is very good and good quality item.

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worth every rupee

bought a Gym Ball and it was really good. better than expected

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Still in use

Bought for a friend

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Gym Ball


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Gym ball

Nice fitness ball

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Hi Yannic,

Thank you for taking the time to write a review on the  size 2 Swiss Ball - blue. I am glad that this product has been working well for you and that you love it.

At Decathlon, our mission is to make sports accessible for the many. It is our responsibility to ensure that our products are made to satisfy our users. 

Feel free to write a review on other Decathlon products and I hope to see you in our store soon!


Fitness Team

Cross Training & Body Building Sports Advisor

United We Are One Decathlonians ☺

Splnil očekávání

Skvělý poměr cena výkon.

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Schöne Farbe, gutes Material....

....aber man muss doch häufiger nachpumpen, obwohl der Stopfen gut drin steckt. Deshalb nur 4 Sterne. Sonst aber prima!!

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Excelente compra

Muy satisfecha con el producto. La utilizo para trabajar y para hacer ejercicios y Movimiento consciente.

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Buen resultado


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Buen producto

Todo perfecto

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Additional Product Information



  • 100% Polyvinyl chloride - Phtalate free

Which gym ball size should you choose?

To choose the right size, please see the guide below. - Size 1 (diameter: 21.7"): For users who are less than 5'3" and weigh less than 185 lbs - Size 2 (diameter: 25.6"): For users who are less than 5'3" and weigh more than 185 lbs For users between 5'3" and 5'11" who weigh less than 185 lbs - Size 3 (diameter: 29.5"): For users who are taller than 5'7" and weigh more than 185 lbs Remember that you can download the user instructions below.

Inflating your gym ball to a safe size

We recommend using a pump (sold separately). Ref.: 8214626 / 8490986 Pump not included. After purchasing your gym ball, inflate it to the maximum dimensions for its size with the help of the tape measure. Size 1 = 21.7", Size 2 = 25.6" and Size 3 = 29.5". Next, check the size and adjust it if necessary so that your knees are at hip height when you are sitting on the ball. Remember that you can download the user instructions below.

What comes with the gym ball?

The gym ball comes with: - 2 plugs, in case you misplace one of them - a plug remover to easily remove the plug when you want to inflate / deflate the ball - a tape measure, to inflate the ball correctly to a safe size - instructions for use - a training poster to teach you the basics. Remember that you can download the user instructions below:$162a572dc90bddf980d25188afc001eb/8603633%208603634%208603635%208640038%208

What exercises can you do with your gym ball?

Don't know which exercise to start with, or how to get your posture right? Take a look at the poster below:$cb1af4a5efa477ea4606585f44e5ef7b/poster%20definitif%20pixl.pdf (Copy and paste the link in your web browser) Download our poster on your smartphone or print it out to gain access to a dozen free exercises developed by our design teams as well as qualified sports coaches!



Product testing

To guarantee quality and safety, we perform numerous tests before our balls hit the shelves. There are two main tests: - A repeat compression test: We compress the ball more than 100,000 times with a weight of 430 lbs. - A static compression test: We compress the ball with a weight of 715 lbs.

Storage instructions

Store it indoors on a clean floor (so that there is no risk of it bursting). Do not store near heat sources (risk of bursting) or on wooden flooring (risk of marking).

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual