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Boys' Gym T-Shirt Breathable Short-Sleeved S900

Sale price: $10.00 Regular price: $12.99

T-shirt made with 2 fabrics designed for high-intensity sportsVery light, stretchy fabric with mesh at the back for excellent ventilation

Color: Select a color
Size: Select a size

This product runs small

Sale price: $10.00 Regular price: $12.99

Free shipping over $49

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8543343

Product Videos

Product Features

A photo of the Boys' Gym T-Shirt Breathable Short-Sleeved S900 in use

Boys' Gym T-Shirt Breathable Short-Sleeved S900 | high-intensity PE lessons and sports activities.

T-shirt made with 2 fabrics designed for high-intensity sportsVery light, stretchy fabric with mesh at the back for excellent ventilation

Moisture wicking

Majority polyester fabric to effectively wick away perspiration


spandex for stretch with a cut designed for intense movements


The lightest T-shirt in synthetic knitMain fabric weighs 4.4 oz/sqm max

Questions & Answers

Product Customer Reviews

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174 Reviews
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Boys' Gym T-Shirt Breathable Short-Sleeved S900, bordeaux Image 6 of 5
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good product

Good product compared to the price

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Does the job

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He loves her so much

He loves her so much

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Ideal for hot weather

My son was very comfortable this summer with this t-shirt. We liked it because of its airy, sweat-proof structure and soft texture. If there was another color, we would have bought it, but unfortunately it was not available.

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Excellent, light, color very…

Excellent, light, very nice color and dries in 2 seconds. Perfect for everyday, sports and holidays.

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T shirt

Fits my slim 7yr old perfectly. Would recommend it.

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Quality is nice BUT!!!

The quality is very nice... the price / performance is very successful, but the mold is a little small, I recommend it to buy 1 year older.

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Perfect, very good quality, immediately…

Perfect, very good quality, immediately washed, immediately dry!!!

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good product

good product

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For single use only...

For single use it works

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The material is great...

The material is great

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Good product…

Good product

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A t-shirt that he is…

A t-shirt that he is good for doing sports with!

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Additional Product Information


Main fabric: 87.0% Polyethylene Terephtalate, 13.0% Spandex ; Back fabric: 95.0% Polyethylene Terephtalate, 5.0% Spandex

Our gym clothing is designed for kids aged 6 to 14: up to 5'8” for boys and 5'5” for girls

Our range is designed for sports activities at school or a children's gym. According to recommendations by the World Health Organization (WHO), children should do at least 1 hour of physical activity a day.The critical role of sport and its benefits for children's development and physical and mental well-being are proven: development of motor skills and agility, self-confidence, and belonging to a group

The domyos product design process:

Our design teams work toward a single objective: providing a perfect balance of perspiration wicking, warmth and stretchiness based on the needs of our young sports users.Your child will be able to choose their full gym outfit: T-shirt, tank top, leggings, bottoms, shorts, sweatshirt, or jacket.

Our new sizing for children's physical education and sports clothing launches in january 2019:

We have improved the sizing on our clothing for ages 6 to 14.We present each product with its age range as well as the height of the child. We know that there are vast differences in height for children of the same age. Feel free to measure your child to see which model will fit themWe also offer an additional size for ages 14-15: boys up to 5'8” and girls up to 5'5”

Did you know?

Our products are regularly tested and we make changes based on customer feedback.

Product testing

These tests are regularly performed by an independent laboratory and allow us to ensure that our quality standards are always upheld.This garment has undergone washing and drying tests to ensure that it retains its shape and color.



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


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