The Polartec Level I thermal shirt is used as the first layer of clothing and is ideal for winter and off-season use.

It is made of premium Power Dry® material (100% polyester) with a density of 204g/m2 from the globally renowned company Polartec®. The elastic fabric has a two-layer structure, with the inner surface conducive to moisture wicking, while the outer surface ensures fast drying and excellent thermal regulation. The thermal shirt has good insulating properties and dries twice as fast as cotton.

The anatomical cut naturally conforms to the body's contours and ensures comfort during physical activity. Flat seams prevent rubbing and discomfort. Designers have added a reflective brand logo on the chest.

The Polartec Level I thermal shirt is designed for daily winter wear and during active physical activities. When combined with Polartec Level I thermal pants, it creates a base layer of thermal underwear.

Material: Power Dry® (100% Polyester)

Density: 204g/m2

Properties:

• Moisture-wicking;
• Excellent insulating and anti-pilling properties;
• Hypoallergenic;
• Quick-drying material;
• Anatomical cut;
• Flat seams.

YKK:

YKK is a global leader in the production of clothing zippers. It produces 90% of all such zippers in 71 factories worldwide. It is a group of Japanese companies whose trademark was registered almost 70 years ago. YKK is decoded and translated from Japanese as "Yoshida Factory" – the surname of the company's founder, who started producing clothing fasteners in the 1930s. Success was achieved through collaboration with leading clothing brands and the introduction of particularly rigorous quality standards. Additionally, for a very long time, the machine for producing high-quality fasteners was kept strictly secret. This helped the company quickly outpace its main competitors.