Edge for MacBook Air The Edge for MacBook Air 13" is the ultimate pairing of protection and functionality. The case features a solid TPU design that uses impact-dispersing Crumple Zone™ Corner construction to protect vulnerable corners of the device and achieve maximum drop protection. The flexible hinge design provides extra protection and ventilation for the device. The clear back panel of the case is perfect for asset scanning without having to remove the case, making it an ideal solution for the K-12 environment.