These foot warmer packets are perfect for cold weather対策. Available in 8-hour and 5-hour durations. Expiration date is June 2026. The items will be shipped without the box; only the contents will be sent. Please understand that these have been stored at home. Thank you. ◎ Black type: 12 pairs (24 pieces) * Duration: 5 hours ◎ Regular type: 15 pairs (30 pieces) * Duration: 8 hours Thank you for viewing.