Hokkairo Nukunuku Touban for Shoes, Set of 4 Bags Contains 5 pairs (10 pieces) per bag Made in Japan Lasts for 9 hours Thin, non-slip design that stays in place. For shoes, contains deodorizing ingredients Expiration date: April 2026 This type is for shoes, but I use them in slippers^_^ Please feel free to comment if you have any questions. Body warmer For shoes