Lady Viking Helmet with Blinky Horns makes for a lovely day in Valhalla! Perfect for Viking-themed company promotions, football and sports promos, as well as collegiate or high school promos for rallies or resale. Trade Shows? Go crazy! Festivals? Do it. To activate Viking Helmets with Flashing Horns, flip switch on the inside of both horns - flashing function only. One size fits most - from ladies to dudes with more petite heads who want to spruce up their Viking outfit. Complies with ASTM, CPSIA, Prop 65.