Snow Peak Men's Recycled Pe/Wo Long Sleeved T-Shirt - OliveA thermal base layer for winter expeditions, that can be worn on its own in the warmer seasons. Merino wool is knitted with polyester, and utilising graphene for its antibacterial properties. Constructed from stretch panels for articulated movement under bigger layers, the relaxed fit makes this an all seasons choice, in addition to its soft and lightweight hand.