This long-sleeved travel shirt is made from 2.4-oz polyester ripstop; with permanent 30-UPF sun protection. Details include: hidden collar tabs, convertible sunshade collar and impressive air vents. To forestall sunstroke, wear the Long-Sleeved Sol Patrol Shirt. It has endured the travel-test for function-forward UV protection in sweltering spots the world over. The 100% polyester ripstop fabric provides air conditioning and 30-UPF sun protection, while a new cooling mesh center back vent and side arm vents allow for maximum ventilation. The double-layer collar stands up for extra sun protection or stays put with hidden snaps at collar points. Recyclable through the Common Threads Recycling Program.