I’ve been using Flex for years… I am never going back. I’m in love. Hopefully, Flex is here to stay because nothing else compares. Noticeably less cramping, no leaking, nothing to think about. I sincerely forget that I have it in sometimes. No more frequent changes. Once every 12 hours is ridiculously easy and less work truthfully. Love my Flex! I don’t see an option for the Flex plant annual delivery. Maybe I missed it, but if not, hopefully soon !