The ultimate base layer: Mons Royale Merino Supermons 3/4 Overall. The head-to-toe luxury of 100% merino simply doesn\'t get any softer or warmer than this. Mountain or chalet, day or night you won\'t want to take it off. Made using 100% Merino 200, which is warm, breathable, and odour resistant. Features100 % Merino 200Mons standard fitFull-length front zipBreathable merino mesh backFull-width rear zipper and easy envelope fly - access all areas3/4 length for boot-top comfortThumb loops