GloFX Red Heart Shape Diffraction Party Rave Glasses Hearts Shaped GloFX Heart Shape Diffraction Glasses - Red Laser Etched Hard Plastic Lenses 3 Times the Diffraction of Competitors Stainless Steel Hinges Lifetime Limited Warranty Fireworks and Firework Shows Science class and learning the study of light waves Holiday and Christmas lights Festivals and carnivals Concerts and Music Festivals Lasers LED Gloving and orbit light shows Enhancing any light shows or performances