I've used the B-BOX a few times, and the writing is starting to fade. I don't think there are any stains. Please check the photos. I used the Munchkin a few times, but my child quickly got used to a regular cup and stopped using it, so it's very clean. I've washed them with detergent and stored them as is, so please refrain from purchasing if you are concerned. Also, I have a cat at home, so please refrain from purchasing if you are concerned! They are being sold as a set, but if you only want to buy one, it's 1000 yen. Please let me know in the comments! *I'm decluttering, so I'll delete and discard them if they don't sell by the end of the year. Type... Mug/Straw Mug