Not a basic piece of the layering pie. Our base layers are as comfortable on a bootpack as they are worn to bed. Our lightest base layer, at 200gsm this thermal top regulates temperature whatever the activity from sun to snow and stays stink free for days on end. The Signature Blend is even beloved by those with merino irritations making it an unrivalled on-skin layer. 4-way stretch, scoop bottom, offset shoulder panels and flatlock stitching ensure Le Base works with your body in perfect harmony.