evo.com | Mons Royale Long Underwear Tops > Some classics don't need a redesign. The MONS ROYALE Yotei Merino Classic Long-Sleeve Baselayer Top uses 190 g/m^2 100% merino wool to keep your temperature steady, move sweat out and stay fresh for days. Thumb loops lock the sleeves in place, so it layers cleanly under anything from a shell to a flannel. Standard Fit 100% Merino Wool Thumb Loops 190 g/m^2 Fabric Weight | Mons Royale Yotei Classic Long-Sleeve Baselayer Top Unisex 2027 - X-Large Black | Wool