The Tres thermals are made from breathable merino wool, rayon bamboo, copper infused cotton and elastane fibres, making for a soft, ultra-fine premium base layer.  They were designed to regulate body temperature in all weather conditions, resists odours and will keep you warm, without overheating. Crafted to contour your body, as well as allow for maximum movement during your time on the slopes, or any sport of your choice.  The Details Elasticated waistband - sitting nicely on the hips for a flattering silhouette Flatlock seams to prevent chafing Premium base layer that will keep you warm and comfortable on the coldest of days worldwide Soft feel against skin Comfortable mixed with technical performance Tres branding for a fashion look Made from: 27% merino wool, 54% rayon Bamboo, 9% copper infused cotton, 10% Elastane Women's Base Layer Bottom