DetailsLasting Size Chart NICO Men's 160 g, 16.5 microns 100% Merino wool boxers with elastic waistband, single-layer knitwear and flat seams. The NICO are the underwear you've been searching for and it is made from 16.5 microns, therefore it is softer then any other merino wool on the market. It is suitable for daily use and also all sports. It is especially designed for conditions where you need light and breathable clothes that feel comfortable even though you perspire heavily. Flatlock seams eliminate chafing and the contoured pouch offers additional support.