The Men's BugsAway Baja Sur Long Sleeve Shirt appalls insects everywhere. Lightweight, UPF 30, and quick drying, the shirt's adjustable mesh ventilation at the sides and back yoke mesh lining keep you cool. Two chest flap pockets, one with a snap, and one with a security zip. Convenient back locker loop and rollup sleeve tabs.ExOfficio's BugsAway clothing is treated with Insect Shield, giving you invisible, odourless protection just by putting on your clothes. The treatment is bound to the fabric fibres, so it stays in your clothes – not on your skin – and lasts through 70 washes. Ants, flies, mites, 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.