Product details Silhouette:Square & Rectangle Lens Type:Anti-reflective Material:Plastic A clever mix of form, function, and Carrera’s signature innovation – these sunglasses are a standout choice. Constructed from injection-molded polyamide, the sports-inspired square frames are fitted with the latest iteration of the HyperFit hinge that grants natural movement, comfort, and flexibility. The cutting-edge mechanism allows you to securely wrap them around your neck when not in use, while the final finishing touch comes from the complimentary bracelet accented with Carrera’s red and white Flag. The Carrera HyperFit 17/S includes the glasses case, cleaning cloth and guarantee.