BugsAway apparel is treated with Insect Shield, giving you invisible, odorless protection just by putting on your clothes The treatment binds permethrin to fabric fibers for the life of the garment, so it stays in your clothes—not on your skin—and lasts through 70 washes It's effective against ants, flies, chiggers, midges and ticks, as well as mosquitoes, which can transmit diseases such as Zika, Chikungunya, Dengue and West Nile viruses Silvadur™ delivers odor resistance for the lifetime of the garment, for less washing and more wearing, so you can pack lighter for your adventure 1 hidden security zip pocket on right side that fits your passport or phone Mesh-lined back yoke ventilation aids air circulation UPF 50 fabric for sun protection