Meet Merino Wool. It's a naturally soft fiber that's guaranteed to keep you warm when it’s chilly, cool when it’s hot, and comfortable in pretty much every situation. Even better, our Merino Wool shirts are blended with Tencel®️ Lyocell, a fiber known for its cooling, quick-drying, and smooth-against-the-skin properties and created it in plus sizes, so it feels (and looks) good on everyone.