The Men's Rho LT Zip Neck is a comfortable, warm base layer for lower output activities in cool temperatures. The moisture-wicking Torrent brushed polyester blend fabric delivers performance stretch & effective thermal regulation with an excellent feel next to the skin. The fabric is treated with Polygiene odour controlling finish that helps keep the Rho fresh during repeated use & washings. Articulated patterning & gusseted underarms add freedom of movement, flatlock seams minimise irritation, the tall collar seals in warmth, & the deep zip neck opens easily for rapid ventilation.