I used these until around 2 months old. There are no noticeable stains, but they show signs of use. Since you probably won't wear them for long, how about these for those who need multiple pieces or for spares? I'll also include two baby undershirts from "Tamahiyo" as a bonus (^^) I look forward to purchases from those who understand that these are used items. I will lightly fold them in a stack of 7 and ship them via Yu-Packet Post. I will compress them as much as possible due to shipping costs. Please note that there may be creases from folding.