Hokairo Nukunuku Biyori (Warm Days) Non-Adhesive Mini Hand Warmers, 30 pieces x 2 boxes Expiration Date: April 2026 Maximum Temperature: 70°C Average Temperature: 55°C Duration: 10 hours Made in Japan ＜How to Use＞ ● Take out the hand warmer and shake it lightly a few times. It will warm up in a few minutes. ● To avoid low-temperature burns, use it in the pocket of an outer garment such as a coat, or over a shirt or undershirt, or wrapped in cloth. (Do not apply directly to the skin.) New and Unopened Instant purchase welcome. Due to shipping, the box will be opened and only the contents will be shipped.