Madison Isoler Merino Long Sleeve Men's Base Layer - BlackMadison Isoler Merino Long Sleeve Men's Base Layer Black An ideal first layer, the Isoler Merino base layer provides unrivalled moisture absorption. The 100% Merino wool is 180gsm in weight and has a soft hand feel, ideal for sports by keeping you warm on the cool days and quickly wicks the sweat away on the warmer days. Unlike man made fibres, Merino wool retains its thermal properties when it's wet to better regulate the body's temperature. As