Carrera Rectangle Mens Black Blue Blue Sky Mirror Sunglasses Hyperfit 17S are a part of the HyperFit range. The unique construction guarantees a flexible fit due to the innovative rubber hinges that hold the sunglasses firmly in place at all times whilst adapting to all head sizes and face shapes. The design also allows the frame to wrap around the neck when not in use. The temples showcase the Carrera logo for brand authenticity