Comes with added elastic chin strap. Worn 2x at festivals and ready for new look. Stand out with the original Neon Cowboys Hat! Featuring 3 lights settings, re-usable 8+ hours battery life, and water-resistant durability. Perfect for parties, festivals, bachelorette bashes, and Halloween. Reuse-able: 8+ hrs battery life (replaceable AA batteries) 3 Light Settings (Solid, Blink, Flash) 23 inches inner circumference (Foam padding included for Smaller Heads) Recyclable Plastic & Water/Rain Resistant Batteries not included