The OO9181 Radarlock Path OO9181-19 does what it is supposed to do. Manufacturerd by a quality brand in Oakley, means the OO9181 Radarlock Path OO9181-19 has been manufactured to last. Like all Oakley sunglasses you will receive a manufacturer's warranty, & will be able to send back your Oakley sunglasses in the event you are not entirely happy with your order.