InsectGuard Permethrin Insect Repellent Treated Head, Neck and Ears Protector (Blue) One Size Fits All (Ages 12 to Adult)! Can be worn over a hat (as shown) or by itself as a head band for head, neck and ear protection. Provides continuous, effective and odorless insect protection. Comes pretreated with a powerful microencapsulated permethrin insect repellent and is registered to repel mosquitoes - that may carry West Nile Virus, ticks - that may carry Lyme disease, ants, flies, chiggers and/or midges. Made of an extremely light, cool and durable fabric that is highly resistant to tears, wear and the retention of hair, dirt and debris. The proprietary material is also, water, wind and weather resistant. No oily chemicals on your skin, clothing or to inhale and One Size fits all - Ages 12 to Adult! The fabric technology is a state of the art non-woven material with an architecture that combats insects ability to find a way to bite-through and feed. Soft, light weight and breathable fabrics are very comfortable to wear. In fact, you may even forget you have it on. Treated with the only registered microencapsulation technology based on Permethrin. The treatment process provides a KNOCKDEAD effect for insects when they come into contact with it. Provides effective, odorless insect protection that is registered to last up to the entire lifetime of the garment. Total weight less then an ounce (.8oz approximately). Total weight less then an ounce (.8oz approximately).