TNW is a thinner trekking sock containing merino wool, which is a unique natural material and thus provides excellent thermal insulation and moisture removing properties. The sock section around the ankle is knitted from a smooth single-layer fabric and the bottom is made of a double layer smooth knit. Elastic around the instep ensures a perfect fit at the bottom of the foot and improves performance during sport activities. Material: 75% MERINO WOOL, 10% SILTEX - polypropylene, 10% POLYAMIDE,5% LYCRA - elastan