ExOfficio Women's BugsAway Lumen Long-Sleeve Shirt- Insect, Tick, Mosquito Repellent Permethrin Clothing 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 Insect Shield technology repels mosquitoes, ticks, ants, flies, chiggers and midges Mesh ventilated sleeves Interior fold-over pocket Flatlock stitching