The RB4171 Erika RB4171-54-710-T5 does what it is supposed to do. Manufacturerd by a quality brand in Ray Ban, means the RB4171 Erika RB4171-54-710-T5 has been manufactured to last. Like all Ray Ban sunglasses you will receive a manufacturer's warranty, & will be able to send back your Ray Ban sunglasses in the event you are not entirely happy with your order.