How do I sign up for REN? REN June 01, 2017 08:06 Updated Follow Signing up is super easy! Just click here to create and account and join REN: http://RENActive.co/subscribe/ Related articles How does REN work? Is there a size guide for REN? How much does REN cost? When will I receive my first box? Do you ship to Canada & Internationally? Comments 0 comments Please sign in to leave a comment.