The CK3163S CK3163S-001 does what it is supposed to do. Manufacturerd by a quality brand in Calvin Klein Platinum, means the CK3163S CK3163S-001 has been manufactured to last. Like all Calvin Klein Platinum sunglasses you will receive a manufacturer's warranty, and will be able to send back your Calvin Klein Platinum sunglasses in the event you are not entirely happy with your order.