This is a 4/3 Rip Curl Ultimate Elasto wetsuit, size medium. The reason I only want $50 is because the zipper is broken and stuck about halfway up. This wetsuit does have a back flap which covers your entire back underneath the zippered part. I wore it surfing with the broken zipper last winter and it wasn't nearly as bad as I thought it would be. Basically, it would be fine in the water any time before you need to pull out the booties. I have been told that it could be fixed for around $30 but I never really looked into it. Throw an offer at me. I'm in Wilmington, NC and would rather not have to ship anything.