Product available with different options Merino wool WHI merino trekking socks WHI-640L €11.59 WHI is a medium thick trekking sock containing merino wool, which is a unique natural material and provides excellent thermal insulation and moisture removing properties. The sock is made of a two-layer and smooth knit. Material: 70% MERINO VLNA, 15% SILTEX, 10% POLYAMID, 5% LYCRA View