High quality sunglasses from a household name, all Calvin Klein Collection sunglasses are made from tough durable materials. So this CK7901S CK7901S-039 from Calvin Klein Collection will last for many years to come. But don't take our word for it, order the CK7901S CK7901S-039 today and if you're not completely happy, simply return it to us in its original condition within 14 days for an exchange or refund.