Men’s Base layers are designed to move moisture away from your skin and keep you dry and comfortable - this process is called wicking, and it is an essential part of any base layer system.
Synthetic men’s base layers use capillary action to draw sweat away from the skin allowing evaporative cooling. Merino men’s base layers use natural fine-grade wool to achieve the same thing.
Merino base layers for men are particularly effective as men’s thermal underwear in the cool or cold conditions found when snowboarding. It is especially important for men’s winter thermal base layers to have high performance and wicking properties because sweat can be very uncomfortable when it cools during inactive phases. Therefore avoid cotton men’s base layers at all costs – they will hold sweat next to your skin, feeling clammy while you’re hot and then cooling rapidly when you stop.