NEW AND IMPROVED 100% MERINO CREW WHY IT'S SPECIAL: Low-profile saddle stitching and improved fabric stability for long-lasting comfort 100% merino wool with a steam finish for a cooler feel and reduced shrinkage Moisture-wicking, odor-resistant, and UPF 30 for all-day performance GOOD TO KNOW: Do you love the 24 Hour Collection? This is it's future.