The super lightweight Bug Barrier™ Tech Travel L/S II Men functional shirt from Royal Robbins is a true insect blocker. The name Bug Barrier says it all, as the shirt is equipped with Insect-Shield® technology, which incorporates permethrin into the fibers. Odorless and lasting for the life of the shirt, it effectively protects against all blood-sucking insects, which will now have to look for food elsewhere. Additionally, this long-sleeve shirt features a sun protection factor of UPF 50+, successfully shielding you from the sun. Wrinkle-free, easy to care for, and quick-drying, the Bug Barrier™ Tech Travel L/S II Men is the ideal travel companion for sunny and insect-rich vacation destinations around the world. The relaxed fit of the functional shirt with concealed seams perfectly complements the very soft and stretchy material, paving the way for a future as your favorite shirt.