Providing medium coverage, the Molly bottoms are Black Tip's fuller coverage hipster bottoms.
The slim band sits on your hip and adjusts with a side tie, so you can pull these babies as tight as you want (or loosen them to accommodate your huge post-surf meal). The Mollys are not ruched in the bottom, and so are more modest than the Miranda, Kylie, or Stacy bottoms.
The Mollys can be matched with any Black Tip top with the same colors... or with any other bikini top, surf tee, or rashguard for that matter. Black Tip's bikini separates sizes tend to run small, so those used to Western sizes should definitely size up.