These Tiger.dk colour changing sunglasses are a stylish and practical choice for any occasion. Featuring a sleek blue frame, the lenses automatically darken in sunlight, providing you with optimal UV protection. The sunglasses are category 3, offering high levels of UV protection and reducing glare. The lenses are also UV400, which means they block out 100% of harmful UVA and UVB rays. Enjoy both fashion and function with these practical sunglasses.