Hokairo Mini Nukunuku Biyori Non-adhesive Mini Hand Warmers 60 pieces Maintains a stable temperature. For warming during sports, leisure activities, and for the lower back and legs. Maximum temperature: 70°C Average temperature: 55°C Duration: 10 hours Expiration date: 2026.4 Will be shipped without the box. Instant purchase OK. We aim to ship within 24 hours. Simple packaging, recycled packaging will be used. Due to the thickness, it will be placed directly into a bag for shipping. Yu-yu Mercari ↔︎ Raku-Raku Mercari shipping method may be changed.