Kiribai Kairo 2-Box Set of Disposable Foot Warmer for Socks, Lasting 8 Hours For Socks, to be applied on the instep: Contains 15 pairs For Socks, to be applied: Contains 15 pairs - Duration: 8 hours - Application: For socks - Made in Japan - Precautions: Do not apply directly to skin. - Precautions: Use with caution in high temperatures. Expiration Date: April 2026 New and unopened, but due to shipping costs, the product will be removed from the box and/or the 5-pair bags for packaging and shipping. The boxes will not be included. Yu-Yu Mercari delivery may be changed to Raku-Raku Mercari delivery. Please understand this before purchasing. Only those who understand the shipping method are requested to purchase. Thank you for viewing.