evo.com | Mons Royale Long Underwear Tops > The original MONS ROYALE base layer, still doing what it does best. The Mons Royale Yotei Merino Classic Long Sleeve Top is cut from 190 g/m^2 100% merino wool that regulates temperature, wicks sweat and shrugs off odor on long days in the mountains. Thumb loops keep the sleeves put under your jacket, and the clean standard fit looks just as good on its own. Standard Fit 100% Merino Wool Thumb Loops 190 g/m^2 Fabric Weight | Mons Royale Yotei Classic Long Sleeve Top Unisex 2027 - X-Large Black | Wool