The ExOfficio Men's BugsAway Tarka Lightweight Long-Sleeve Shirt is a great travel shirt when worn alone on a plane or layered under another piece for chilly outdoor adventures. The UPF 50 fabric provides protection from the sun while you're exploring, and the odor-resistant Silvadur technology ensures your shirt stays fresh as you travel. Forward-rolled shoulders enhance movement, improving comfort during any activity. Whether in the backwoods or the backyard, Insect Shield technology helps keep you protected with built-in invisible, odorless insect protection that repels mosquitoes, ticks, ants, flies, chiggers and midges (no-see-ums). The active ingredient in Insect Shield products is so tightly bonded to the fabric fibers that it retains effective repellency through 70 washes.