I bought this about 5 years ago, but I mainly used an Ergo carrier, so I didn't use this one much. It shows signs of use. Would this be suitable as a second baby carrier or for a trial run? There are no instructions, but you should be able to find them online. There is no box either! I don't see any noticeable stains, but I'm just a regular person, so I might have missed something. Please understand that this is a used item before purchasing.