Slide on a new level of luxury, because the 509 FZN Merino 180 Boxer Shorts have been made with a stretchy Merino/spandex blend for all-day comfort. These warm, wicking boxers provide incredible moisture and temperature management while maintaining super-soft, next-to-skin comfort. Elastic waist band, fitted legs, for great baselayer fit, and comfort 180 GSM 18.