When you sign up for Rakuten, you'll get $40 cash back after purchasing your Flex product through their site! Just click the button below to sign up, and then search Flex in the search bar. When you shop for your Flex product through the Rakuten site, you'll get an additional 3% cash back on your purchase. Make sure to still use my code RICHBITCH10 to save 10% at checkout! With all of those savings your cash back will be more than the price of your cup!