T-shirt or undershirt, socks and clothes. Thin liner socks, thicker walking socks Mid layer: A fleece or woolen top. In the summer, trousers or shorts (do not wear jeans as they will hold water and freeze on you in winter). Cotton retains moisture, so don’t wear it. Polyester and other synthetic fabrics like polyester don’t hold water and dry faster. Outer Layer: Waterproof Jacket Breathable works best for comfort. Waterproof pants, Hat, Gloves Sun hats in summer.