Sport sunglasses are designed for Driving, Cycling and all Outdoor Activities. Lens Made of Shatterproof Unbreakable PC Material are Durable Enough for Long Time Using .Only The Main Black Lens is Polarized Lenses Against Strong Sunlight, the Other 4 Lens are Colored Sunglasses for Different Environmental Condition. Come with an elastic sport Belt which you can Interchange it as and When You Like it to be Strap or Bow. Logo can be impinted as requested. Good choice for promotional.