The PO3067S PO3067S-57-95-31 does what it is supposed to do. Manufacturerd by a quality brand in Persol, means the PO3067S PO3067S-57-95-31 has been manufactured to last. Like all Persol sunglasses you will receive a manufacturer's warranty, & will be able to send back your Persol sunglasses in the event you are not entirely happy with your order.