Where can I buy the Discovery Kit? Morgan Jones October 15, 2018 23:57 Updated Follow Our Discovery Kit allows you to try both the disc and the cup and can be purchased from flexcup.com Related articles What is the difference between the FLEX cup and other cups? What is the difference between the FLEX Disc and the FLEX Cup? What is the FLEX Cup? Tips for using FLEX during sex I’m scared to try FLEX. Comments 0 comments Please sign in to leave a comment.