Here's what other sites are saying:
Name your outdoor passion, and the Mammut All-Year Long Sleeve Long Underwear Top for men is ready to perform. From bouldering to running and ski touring to backpacking, this midweight base layer features a mix of merino wool and polyester fabrics to maximize breathability and performance, so you remain comfortable all-day and all year long. The shirt is body mapped and contoured to ensure optimal breathability and wicking performance, and it's treated with an anti-microbial feature to reduce odor build up.
- Altrec Outlet refers to the men's version
A great baselayer, Mammut's Longsleeve All-Year Shirt prevents chilling with body mapped synthetic and Merino-blend panels for moisture-wicking and temperature. Microfiber panels wick sweat, light Merino and poly regulates temp, and waffle-textured Merino wool-blend sections insulate you from the cold.
- Mountain Gear refers to the men's version
CLOSEOUTS . Mammut's All-Year base layer top let you comfortably adjust to changing temperatures, with strategically placed moisture-wicking panels for a balance of insulation and breathability. Available Colors: GRAPHITE/BLACK, CHILLI/CASSIS/FIRE. Sizes: S, XL, 2XL, L, M.
- Sierra Trading Post refers to the men's version