Kao MegRhythm Cooling Eye Mask Refreshing Eucalyptus Scent - 10 sheets ・Cooling sensation just by opening ・Disposable type ・Unisex size The box has been discarded, so it is not included. Please refrain from purchasing if this is a concern. I will ship it in simple packaging. m(_ _)m Manufactured on 20240228 [Quoted from the official website] There is no expiration date, but it is recommended to use it as soon as possible after purchase. When stored unopened, away from direct sunlight, high temperatures, and heat-generating sources (such as heating appliances and computers), it is designed to maintain its quality for at least 3 years from the date of manufacture. Even after 3 years, it does not immediately become unusable, but if it has been opened and smells different, has solidified, or has changed color, etc., and is in a different condition than when purchased, please do not use it.