The thermal trousers  when I was a child  Kilpi NIEL-JB  And  realized  in quick-drying OPTI-DRY material, pleasant to the touch, extremely elastic. This material  wicks moisture away from the skin thus maintaining thermal comfort. The high waist with elasticated hem does not press on the abdomen and fits perfectly to your side. Made  seamless and with a fitted cut that replicates the curves of the body,  maximizes comfort during movement. We also recommend that you purchase the KILPI NATHAN-JB thermal shirt  as a great set not only for skiing, but also for other outdoor and sports activities.