100% AcrylicThis cap is 100% acrylic and made from quality material with lasting durability. Acrylic is lightweight, soft, cool and comfortable, with a soft cotton-like feel and texture. Acrylic also is extremely color-fast, so they are highly resistant to fading.InsectGuard products come pretreated with a powerful microencapsulated permethrin insect repellent for protection from disease-spreading ticks (Lyme disease) and mosquitoes (West Nile and Zika viruses) Registered to repel mosquitoes, ticks, ants, flies, chiggers and/or midges. The treatment process provides a KNOCKDEAD effect for insects when they come in contact with it and provides effective, odorless insect protection Registered to last to 50 washes.One Size Fits Most: With an adjustable Velcro strap, it is easy to fit the baseball cap to your comfort and maintain secure fit at all times.These ball caps are unisex, so they make great gifts for men and women, boys and girls. With a variety of colors, you can find a hat for every member of your family.