Foot warmer sheets with 8-hour heat retention, size 25-27cm, 3 pieces, perfect for cold weather対策. - Product Name: Foot Warmer Sheets - Size: 25-27cm - Quantity: 3 pieces - Duration: 8 hours - Expiration Date: April 2026 One pair (1 foot) is included as a bonus, but the expiration date is April 2023. It's expired, but it's a bonus. Please comment if you don't want it. Please understand that these have been stored at home for many years before purchasing. Thank you for looking.