The New Balance Race Day clayash men's running t-shirt supports intense running training by providing effective moisture-wicking and high breathability during movement. The lightweight fabric, made of 80% recycled polyester and 20% elastane, is stretchy, while reflective elements enhance safety in low light conditions.
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Men's New Balance Race Day clayash running shirt (MT43213CYS)
The New Balance Race Day clayash men's running t-shirt sets a new standard in running apparel for demanding men. It uses advanced recycled materials and modern technologies to support comfort and performance during training.
Technologies supporting running activity
The t-shirt is made from a highly breathable fabric that effectively wicks away moisture during intense physical effort. The use of stretchy fabric allows freedom of movement, significantly enhancing comfort while running. The New Balance Race Day model also features reflective elements that improve visibility after dark.
Sustainable materials and environmental friendliness
The main construction material is recycled polyester, which makes up as much as 80% of the fabric composition, complemented by 20% elastane for better flexibility. Recycled materials not only reduce the environmental footprint but also maintain high durability and functionality. The choice of recycled materials confirms New Balance’s commitment to responsible sportswear production.
Design and fit for running
The Race Day model is designed with runners in mind who expect a regular fit and comfort. The round neckline and short sleeves provide optimal freedom of movement and adequate ventilation during running. The lack of compression and classic finish make it easy to wear both during training and competitive events.
New Balance Race Day clayash men's running t-shirt - features:
- Main material consists of 80% recycled polyester;
- 20% elastane addition ensures flexibility and comfort;
- Advanced breathable properties increase comfort during running;
- Effective moisture-wicking supports training performance;
- Reflective elements enhance visibility in low light;
- Round neckline and short sleeves optimise ventilation;
- Use of recycled materials reduces environmental impact;
- No compression guarantees comfort during extended wear;
- Designed for runners expecting high functionality.
Product Details

Recycled material
In the production process, recycled polyester was used, which constitutes 80% of the t-shirt's composition. This carefully selected material allows for the expected performance properties to be maintained during intense effort. By choosing this model, you support the idea of reducing waste and minimising environmental impact.

Visible reflective elements
Reflective elements placed on the shirt reflect light when illuminated by oncoming vehicles or streetlights. In conditions of limited visibility, the light returns to the source, clearly highlighting the silhouette of the runner in motion. During evening training on the roadside, every step becomes more noticeable to other road users thanks to the intense flashes generated by these details.

Round neckline and short sleeve
The structured round neckline and short sleeves do not restrict arm movement when running at various distances. The open design of these elements facilitates air circulation, supporting heat exchange during increased exertion. During dynamic starts or daily training, you can count on complete freedom in gesture and pace.
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Men's New Balance Race Day clayash running shirt
Men's New Balance Race Day clayash running shirt
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