I stored these in a plastic bag. This is a set of New Year's "Otoshidama" money envelopes. Seals are also included. Some envelopes have marks (lines) that look like they were pressed against something. They are only noticeable if you look closely. I will ship only the contents of the envelopes that are in plastic bags. I believe there are no noticeable stains, but please understand that these are used items and have been stored at home. Thank you for your consideration. ❖ I will use simple packaging and plan to ship via post. ❖ I may use recycled packaging materials. ❖ I do not have any pets, and I am a non-smoker.