Armachillo shirts are the BEST Duluth wear, extra comfortable and easy to wash/dry. Never worn. Made-in-the-Jade™ technology. Every fiber is infused with microscopic jade that dissipates heat on contact. So this cooling tank feels chill to the touch Wicks moisture away, keeps you drier even when you're sweating up a storm. Treated to resist stink Close-to-the-body fit for maximum wicking performance. Ease in action thanks to center back ruching 2" longer than typical tees to cover your caboose when you bend. Hidden bra-keeper snap tabs under each shoulder keeps straps from slipping Lightweight 4.4-oz. knit is 92% silky polyester mixed with 8% stretchy spandex UPF 40 sun protection From a non smoking home.