No matter your aerobic activity, winter sports require a base layer delivering optimal comfort. Designed for lower output activities in cool to cold temperatures, the Arc’teryx Rho LT Zip men’s baselayer long-sleeved shirt is soft on your skin and presents thermally efficient properties. Its trim fit facilitates layering, and the front zipper makes it easy to pull on and off. This base layer features a minimalist design that is durable for its weight. Layering is the key of keeping you dry, warm and using your energy efficiently. Put into the right systems, a good sequence of layers moves moisture away from your skin, conserves or dissipates heat and provides you with weather protection. Here they are. The first layer, worn next-to-skin will provide warmth and quickly move moisture away from your skin. Then, the second layer, is the insulation and fleece, that provides warmth while also dissipating heat during periods of high output. And finally, the third layer, the shell, which is the most weather-protective layer, worn on the outside of all other layers.