Hello there! These are a pair of Birkenstock flip-flops. I’m not sure on the style as I don’t believe these are made any more. If you are familiar with EVA, there isn’t any need to break these in! Lightly worn, but still have a lot of life left in them. Comes from a smoke-free home. Please ask questions before purchase as I do not offer returns/refunds. Thank you for stopping by! Please check out my other listings as I post new items weekly!