SUSYO children's underpants are made of vapor-permeable, quick-drying and flexible material SOFT TEC and THERMO COOL, with UV protection. The material ensures quick moisture wicking from the skin and at the same time has excellent insulating properties. For maximum comfort, the trousers have a snug fit and elastic flat seams. There is also a reflective print on the front. Material composition: 95% polyester, 5% elastane.