Purchased 4 years ago. Used about 30 times, from when my eldest son was 2 weeks old to about 6 months old. Used primarily indoors. Used again from when my second son was 2 weeks old last year. He's now 6 months old, and we've started using a larger baby carrier, so I'm offering this one to someone. It's in good condition. There are no noticeable scratches or stains on the outside or inside. The cross-back part didn't twist, making it easy to put on and take off. You can put the baby in and take them out from the front, so I think it's easy to use for baby carrier beginners and dads. There is no instruction manual, but there are videos on YouTube and other platforms that show how to put it on and take it off, so please refer to those. Thank you!