A welcomed addition to a bestselling series, the Watchtower Long Sleeve 1/2 Zip Shirt offers more than meets the eye. They could say it's just a great cozy pull-on made from a fully sustainable blend of recycled polyester and TENCEL™ Lyocell fibers, but it's so much more than that. Why? Because it's designed to also be a trusted partner on those workout days when you need a little extra warmth. It will keep you dry as you turn up the (internal) heat, and protect you from the sun's rays. And with plenty of stretch, it will keep its shape no matter what you put it through.