Two layer fabric is a unique jersey knit that offers you the ultimate in warmth and comfort. The inner layer is a blend of 50% cotton and 50% polyester for absorbency and softness next to the skin. The outer layer is a blend of 50% merino wool and 50% polyester that offers you wamth and strength. The space between layers acts as an insulating layer trapping warm air from your body. The combination gives you one of the warmest garments you can put on next to your skin. Anti-microbial treatment for added perfomance. Long features a full roomy seat and a plush back signature elastic waistband for comfort. Made in Canada.