When it's cold outside, the first layer is the most important - and the double-layered design of these men's thermal shirts provides the ideal solution. Durable knit outer layer combines 50% cotton/ 40% merino wool/ 10% nylon. Inside layer of soft, breathable, itch-free 100% cotton. Machine wash and dry. Super-soft, warm two-layer construction won't bind. Rib-knit cuffs with Lycra elastane hold their shape. Nonchafing flatlock seams for superior comfort. Made in Canada. Fit: Slightly Fitted Men's Double-Layer Long Underwear, Crewneck Charcoal Heather Large, Wool Blend/Nylon L. L. Bean