From long sleeve shirts to waterproof vests, the Minus 33 Mid-Weight Turtleneck fits under everything and is perfect for fall and winter seasons. Made with a natural 100% 18.5 Micron Merino Wool, this turtleneck also features 230 g/m2 Interlock knit construction that is warm as well as comfortable. Flat lock seams prevent chafing, making it easier to wear for longer periods of time. Like the other Minus 33 mid-weight tops and bottoms, the turtleneck is also machine washable and dryable.