The Flip Case gives sunglasses a more valuable packaging for sale. It can be ordered for free for the following sun glasses: 10225 / 10308 / 10312 / 10496 / 10496Y / 10497 / 10497Y / 10636 / 10640 / 11000 / 11002 / 11003 / 11004 / 11005. All other sun glasses will already be delivered inside the Flip Case. If more than 30 cases are needed please make a comment in the comment field during the check-out process. Thank you.