Boys' thermal underpants Kilpi NIEL-JB for warmth and unrestricted movement of your child on winter days. Made of quick-drying OPTI-DRY material, which is pleasant to the touch, extremely elastic, wicks moisture away from the skin well, thus maintaining the thermal comfort of the child. The waist with a high seat and a braided hem does not press and adapts well to the figure. Flat seams do not irritate the skin and the snug fit ensures freedom of movement. In addition to the Kilpi NIEL-JB boys' thermal underpants, we also recommend getting the Kilpi NATHAN-JB thermal T-shirt, as a great set not only for skiing, but also for other outdoor winter activities.