Safety material: Featuring True Flex PVC Frame with Nearly Indestructible Lenses, strong and light. Waterproof and not easy to fall off. Safe and durable, will not cause harm to the body. The width of the glasses is 5.3"/13.5cm and the height is 2.17"/6cm, one size fits most people.^ Heart Effect Diffraction Glasses: Lights can be turned into loving glasses. When you wear them and look at the lights, you will feel that everything is so wonderful. The love effect that brings your eyes full of love will make you full of happiness and joy. Special heart glasses effect is only evident when you are looking head on at a point of light.^ Heart Glasses Set: We provide glasses in four colors, Let you have more choices. You can match it according to your clothes, or you can share it with your friends or family. ^