The M Flatiron 185 1/4 Zip by Artilect with stand-up collar and short front zip is as solid and reliable as the rock formation that gives it its name. Made from Nuyarn merino yarn technology, it offers top warmth and moisture management, is almost unshakeably hard-wearing and features a very good warmth-to-weight ratio. Dries five times faster than other yarns and is long-lasting - virtually rock-solid.