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Sale price: $2.00 Regular price: $3.99
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Sale price: $2.00 Regular price: $3.99

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Model: 8516225

Product Features

A photo of the TS MC 100 TB B T-SHIRT GRY in use

TS MC 100 TB B T-SHIRT GRY is designed for

The most basic and comfortable of our T-shirts. A basic, just-right fit. We guarantee this product will not fade or lose its shape. Soft neckline for easy dressing.

Moisture wicking

Material contains cotton, which retains moisture and dries slowly


Our 100 boys' mottled gray print T-shirt was eco-designed


100% cotton, softness guaranteed

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Product Customer Reviews

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378 Reviews
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Great for my family

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Gym tshirt

Pure cotton, nice fit, good looking and above all most comfortable

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very nice.

nice product and very comfortable

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Nice fabric quality

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Bad neck

Though the quality of the T-shirt is not bad according to the price, but the the neck of all your basic round neck T-shirt’s half and full both, is bad, after wash it gets even tighter.

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Hello Sir,
Thanks for your time and feedback, we apologise that the product did not meet the basic expectations
With your feedback will alert our quality team to improvise on the component, stitching and wash test parameters.
Please do exchange the product with nearby store and sorry for the inconvenience caused
RegardsSunita Vijay
Country Sport Leader-GYM
Gym t-shirt


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Perfect as per price

Soft and comfortable cloth for kids

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This was an average T shirt, with OK quality

Felt a bit synthetic, cotton content should have been more.

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Normal tee

Can't make out what wordings are on the t-shirt. Bought one each for myself and son to wear together. Sleeves are too short for me but cos it's for boy age so no complaint. Son is ok with his. Plus point is it being recycled.

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Hi Yong, 

Thank you for taking your time to drop us a feedback. 
There were some changes to the selection criteria of our products this year where we try to incorporate and bring in some recycled-material-made clothings.
We changed the size grid for our kids section as well, to cater to some adults so that matching outfits can be worn by father and son. 
Thank you for supporting towards our green campaign!

Ps; The word written on the t-shirt is 'start somewhere' :)
Enjoy your sports! 

Gym/Pilates sports leader
Decathlon Joo Koon
i am an adult

I am an adult but I am able to fit the 14-15 year old shirt and I LIKE IT. The material is soft and it does not loose its shape even after a few wash. Even though it is cheap, it is still opaque and is not too thin. The shirt is comfortable and it fits nicely even though I am an adult

Hi Fatin,

The sizes for kids apparels were made slightly larger compared to last year and the main reason was because children grow quite quickly. Another reason is to cater to petite ladies/men who prefer more fitted clothings so that they have more options to choose from. I am petite myself and i like to buy kids apparels as well ;) 
We will definitely feedback this to the production team and continue with the sizing! Thank you for your valuable feedback!
Gym/Pilates Sports leader 
Camiseta manga corta deportiva

Camiseta cómoda, fresca y ligera, recomiendo

Muy buena calidad/precio

Genial para su precio

Camiseta blanca niño.


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Calidad-precio 100%

Por el precio que tiene es mas que recomendable

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Camiseta blanca manga corta


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Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 100% Cotton

Our gym clothing is designed for kids aged 7 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.

Physical education and sports activities allow children to burn off their energy and explore all the physical possibilities available to them: jumping, balancing, doing a series of movements and tricks. Moving, having fun, and enjoying sports with friends, all while following rules of life in a group, gym activities are accessible and have many benefits that both you and your child will enjoy!

The domyos product design process:

Our design teams work toward this single goal: providing a perfect balance of perspiration wicking, warmth and the need for stretch 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, and jacket.

A new sizing for children's clothing for physical education and sports beginning in january 2019

We have improved the sizing on our clothing for ages 7 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 them. We also offer an additional size for ages 14-15, to fit preteens: 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.

Eco-designed product

First, our supplier collects cotton fabric scraps during production to turn them into fibers. Our spinner then produces a yarn containing 30% of these recycled fibers. This yarn will then be used to make the main component of our printed mottled gray T-shirts.



Product testing

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


Size Guide Visual