The Ex Officio Men's BugsAway Chas'r Long Sleeve Crew Tee provides long lasting, effective and convenient insect protection. Permethrin, the active ingredient in Insect Shield, is invisible, odorless, and tightly bonded to the fabric fibers, and lasts the expected lifetime of the garment 70 washes. It repels mosquitoes including those carrying West Nile virus and malaria, ticks, ants, flies, chiggers and midges no see ums. The Chas'r provides sun protection with a UPF 30 rating, dries quickly, and wicks moisture from the skin. Finally, insect repellent clothing that stops the bugs and starts the adventure. Insect Shield repellent lasts 70 washings. Constructed of 70% cotton, 30% polyester Dri Balance fabric. Insect Shield repels many varieties of insect lasts 70 washings. UPF Sun Guard 30. Odor resistant. Quick drying. Wrinkle resistant. Moisture wicking. Do not dry clean. Avg. length: 29 in. Import.