Merino wool brings the heat in our Backcountry Cedars Rws Merino Midweight Crew Baselayer Top. This toasty midlayer top comes in a classic silhouette featuring integrated gussets for added range of motion in critical zones. Crafted from Responsible Wool Standard - certified merino wool, this top is odor - resistant, thermoregulating, soft as can be, and ultimately.