What Our Gearhead(R) Experts Are Saying:"This is a serious cold-weather sweater. The 5-gauge rib knit feels dense and warm, and the 100% merino construction regulates temperature better than most heavyweight knits I've worn. It wicks moisture well and doesn't hold odor, which makes it great for multi-day wear. It's durable, classic, and built to last."When winter settles in and the air turns sharp, we reach for the Rockcraft Wool Crew Sweater for uncompromising warmth. Royal Robbins crafts this heavyweight layer from 100% Responsible Wool Standard merino wool, delivering natural performance wrapped in timeless style. The 5-gauge rib knit traps air to boost insulation, creating a dense, cozy barrier against the cold. Merino's natural thermoregulation keeps us comfortable through shifting conditions, while moisture-wicking and odor-resistant properties make it ideal for extended wear. A high ribbed crew neck adds classic structure and extra coverage. Durable and built to stand the test of time, this mono-fiber sweater is designed to be worn, loved, and passed down for seasons to come.