This cap features lightweight faux-leather style checkered back that’s smooth, flexible, and comfortable. It bends and moves easily without feeling stiff, while also giving a bold checkered mesh back that is blacklight reactive + glows in the dark—perfect for haunted hayrides, trick-or-treat nights, and every Halloween bash in between. Pair it with your favorite costume or rock it with your everyday fall fit for that playful, eerie vibe. Glow-in-the-dark checkered mesh back Blacklight reactive Adjustable snap closure for the perfect fit Flexible faux-leather style checkered back — smooth, lightweight, and comfortable Glow Features: Charges with sunlight, blacklight, or indoor light Sun & blacklight = brightest glow Glows for ~30 minutes without recharging Light up the night, show off your spooky spirit, and keep it stylish all Halloween long. These caps are a 5 panel seamless foam front with cotton lining behind foam and cotton sweatband to help you stay cool! These have a high crownheight of 4in and snap closure. OSFM. Supports adult hat sizes 6 - 7 1/2 or circumference measurements of 20in - 23 1/2in.