The full manufacturer's warranty from Nike is only valid when the Nike Tour Swoosh Flex Hat is purchased from an Internet Authorized Dealer. We will match any Internet Authorized Dealer's best price on the Nike Tour Swoosh Flex Hat. The Nike Tour Swoosh Flex Hat may be referred to by the following terms: 256652-010, 256652-100, 256652-101, 256652-235, 256652-414, 256652-537, 256652-603, 256652010, 256652100, 256652101, 256652235, 256652414, 256652537, 256652603.