Details Never sacrifice style for comfort again with the Men's Classic All-Season Merino Base Layer VANS Bottom. This go-to base layer features Smartwool's lightest-weight Merino jersey, environmentally conscious plant-based dye, and a classic Vans pattern that will leave you ready for anything, from the sofa to the summit. Material 88% Merino Wool, 12% Nylon. Exclusive Of Decoration. Fit Slim Fit Details Smartwool's slim fit is intended to follow the contours of the body Smartwool's lightest-weight Merino jersey fabric uses a nylon core to increase durability while still keeping 100% Merino wool next to skin Garments are colored using an environmentally conscious plant-based-dye process Fully functional fly Merino-lined, 1.5" (4 cm) wide elastic waistband designed for maximum comfort; 100% Merino next to skin Flatlock seam construction designed to minimize chafing Size medium inseam: 31" (78.5 cm) Weight N/A Smartwool Classic All-Season Merino Baselayer VANS Bottom Men's