This is likely from the Heisei era. There are no noticeable stains, but please consider this a long-term storage item. This is a set of 5 adorable Hello Kitty illustrated "pouch envelopes" (pochibukuro), with stickers, themed around a tea party. - Design: Hello Kitty illustrations - Quantity: Set of 5 - Back design: Plain envelope - Theme: Tea party scene - Included stickers: Used stickers included Thank you for looking.