There are 30 pieces (can be changed to 20 pieces for 400 yen). The expiration date is April 2026. How about it if you plan to use them in February, March, or April? They will be shipped without the outer bag, and the contents will be separated into the 5 pieces shown in the photo. Disposable body warmers that provide 12 hours of warmth when applied to clothing. - Quantity: 10 pieces per pack - Duration: 12 hours - Type: Adhesive body warmer - Made in Japan #DisposableBodyWarmer #AdhesiveDisposableBodyWarmer #S.T.ChemicalBodyWarmer