Hokairo New Nuknuku Touban Non-stick Mini 10 pieces x 2 bags Expiration date: April 2026 Warm and cozy anytime during winter commutes to work or school. This is a non-stick type disposable warmer containing coconut shell activated carbon. Maintains a stable and appropriate temperature. Duration (time maintaining 40°C or higher): Mini: Approximately 12 hours New and unopened. Instant purchase welcome. Will be shipped directly in a Yu-Packet Post Mini envelope.