LESSO children's underpants are made of very flexible, vapor-permeable, quick-drying and warming material. The trousers have an anatomically shaped snug fit and elastic seams on the inside of the trousers. This part of the garment serves as an excellent thermal insulator for the colder season, and trousers should not be missing in a child's wardrobe. Children will surely love this functional underwear during sports and other outdoor activities. Material composition: 57% polyester, 37% nylon, 6% elastane.