ExOfficio Women's BugsAway Lm Long Sleeve, White, Medium Cotton,Mesh,Polyester,Polyester Blend Imported Women's lightweight long-sleeve shirt is great for camping, hiking, climbing, and anywhere protection from ticks, mosquitoes, and other bugs is your top concern Insect-repelling BugsAway apparel using Permethrin-based technology provides protection from mosquitoes, ticks, fleas, and other bugs; odorless/invisible built-in treatment lasts up to 70 washes UPF 30 rated fabric provides protection from the sun while you're exploring Mesh-lined back yoke and underarm mesh provide ventilation and improve airflow Thumb loops ensure sleeves won't ride up when hiking or trekking Ruched raglan sleeves enhance movement and add style