The RynoSkin Total Insect Protection Shirt is a lightweight, breathable, chemical-free bug barrier. This RynoSkin base-layer shirt is designed to wear underneath your clothes for protection against mosquitoes, ticks, chiggers, flies, ants, and many other biting insects. There are no chemicals, so the effectiveness won't wash out over time. The RynoSkin Total Insect Protection Long Sleeve Shirt for Men is ideal for hiking, camping, and hunting, and protects against insects through the weave of the fabric and snug-fitting cuffs and crew neck. 80% nylon/20% lycra. Machine wash. Made in U.S.A.Manufacturer style #: HS041. 80% nylon/20% lycra Chemical-free protection from biting bugs Forms a breathable barrier through the weave of fabric Elastic cuffs Long sleeves, crew neck Snug, stretch-to-fit style Ideal for deep woods adventures