One size fits all.
The TRAP letters are outlined with Eletroluminescent Wire, giving it a very bright glow.
Takes 1 AAA Battery. Lasts 12 Hours Per Set of Batteries. Battery Pack is tucked inside of the hat.
Battery Pack controls three modes: On, Off, and Blinking.

Technical Details

Product Details

Package Dimensions
Width : 7.3 inch
Height : 2.8 inch
Length : 7.8 inch

Shipping Weight: 2.4 ounce (View shipping rates and policies)

ASIN : B00KANDS8S