Mons Royale Women's Yotei Crew Base LayerIt's super important to stay warm and dry when you are in the mountains. This Mons Royale long sleeve base layer is 100% merino wool so it's pretty epic at wicking any moisture away from your body. A couple of the staff here have these and swear by them and because they are 100% merino and not made from synthetic fibres they are pretty stink proof too! 100% merino wool 190gsm weight merino wool regulates your temperature and naturally resists odour