The kids Merino pants are >made from 100% fine Australian Merino wool (Woolmark Certified) and at 230gms is the perfect thermal base layer. Merino wool acts as a thermo-regulator, keeping you cool in warmer climates and warm in colder climates. Its odour repellent, extremely breathable, silky smooth and non-itch.Fabric: 100% fine Australian Merino - Woolmark Certified, wieghs 230g/m 20.5 microns with Interlock knit and Flat lock seams, Non itch,Odour Resistant and UPF 50