The Tiger Stripe Boonie Hat is your classic Vietnam-era designed, authentic replica. Made of 100 percent cotton rip-stop material and features a chin strap that can be easily adjusted. There are screen-sided vents with branch loops and an interior sweatband to keep you cool and comfortable throughout the day. This authentic replica Boonie hat is perfect for working in your backyard, hanging out at the beach, or any activities under the sun. Would be a great gift to a Vietnam veteran to have a Vietnam-era Boonie in their wardrobe. Take pride in your service vets with the Tiger Stripe Boonie Hat.