The boys' thermal long-sleeved T-shirt Kilpi NATHAN-JB, means perfect winter in warmth for your child. Quick-drying OPTI-DRY material, which is pleasant to the touch, extremely elastic, effectively wicks moisture away from the skin and thus maintains thermal comfort. Flat seams do not irritate the skin and the snug fit guarantees freedom of movement. Boys' thermal T-shirt with round neckline Kilpi NATHAN-JB, we offer for the smallest and older boys. We also recommend getting the Kilpi NIEL-JB underpants, as an ideal set not only for skiing, hiking, but also for other outdoor winter activities.Material composition: 53% polyamide, 41% polyester, 6% elastane