Hillman Merino Top-508

By using one of the best insulation materials on earth with the most exceptional thermal control, Hillman created its base layer, which is made entirely of ultrafine 18.5 μm Merino wool.

It will be there when you need extra warmth and will also keep cold when you feel too warm. This 100% Merino layer has better properties than any synthetic or wool/synthetic mixture, which only saves money and reduces the performance of genuine Merino wool.