Kilpi NATHAN-M men's thermal T-shirt with long sleeves is made of quick-drying OPTI-DRY material, which is pleasant to the touch, extremely elastic, wicks moisture away from the skin well and thus maintains thermal comfort. The shirt has a round neckline. A seamless knit with flat seams and a body-hugging fit maximize comfort when moving and wearing. NATHAN-M is available in several colors and a wide range of sizes. We recommend also purchasing the Kilpi NIEL-M underpants as a great set not only for skiing, hiking or other outdoor activities.Model in the photo: Size M, height 178 cm, chest circumference 104 cm, waist circumference 88 cm, hip circumference 111 cm. Material composition: 53% polyamide, 41% polyester, 6% elastane