Arc'teryx Rho LT Unused, domestic genuine product. Color: Black Size: S-M Lightweight, versatile, high-performance thin headwear. Can be worn under a helmet, or on its own on cool days. Uses brushed microfleece Torrent. The breathable, stretchy material is spun with moisture-wicking yarns, providing breathability, thermal performance, and odor resistance, while also being soft and comfortable against the skin. You'll want to have three: one on a rack near the door, one in the pocket of your favorite jacket, and one under the car seat. Keep a Rho LT within easy reach.