Used from immediately after birth until 2 months old. A comforter is not included, but it can be used as a co-sleeper, for diaper changes, as a back support, as a play mat, and for naps. There are no particular stains, but it is a used item, so I would like to sell it to someone who understands this! Please see the photos! Instant purchase OK / Baby goods / Co-sleeper / Nap mat / Diaper changing mat / Play mat