Block both the sun and bugs, while keeping the breeze on your back. Back armhole vents with a mesh-lined back yoke keep you comfortable, while the lightweight, UPF 50, Insect Shield® treated fabric repels the pests. Low-profile front pockets fit your phone and passport, with a security zip on the right. BugsAway® apparel is treated with Insect Shield®, giving you invisible, odorless protection just by putting on your clothes. The treatment is bound to fabric fibers, so it stays in your clothes-not on your skin-and lasts through 70 washes. Ants, flies, chiggers, midges, and ticks don't like it, and neither do mosquitoes, which can transmit insect-borne diseases such as Zika, Chikungunya, Dengue, and West Nile viruses.