This is a Konny baby carrier. M size The inside of the back is mesh material. There is a light stain on the cloth bag. Other than that, I think there are no noticeable stains, but there may be some small pills. Please refrain from purchasing if you are concerned about minor details. Body types: 164 cm tall, slender build 174 cm tall, slender to average build My husband and I were able to use it.