Specifications:Self-heating insoles, no external energy or heat, comfortable and environment-friendly.Raised nodes stimulate reflexology points, alleviating mild to moderate foot discomfort.Made of high quality material, breathable, soft and comfortable to wear.Item Name: InsolesMaterial: Magnet, Self-heating ClothGender: UnisexSuitable Size: 36-44Feature: Self-heating, Magnetic, Comfortable to WearShoes EU US UK China(cm) 36 6 4 36 (23cm) 37 6.5 4.5 37( 23.5cm) 38 7.5 5.5 38 (24cm) 39 8.5 6.5 39 (24.5cm) 40 9 7 40 (25cm) 41 10 8 41 (25.5cm) 42 11 9 42 (26cm) 43 12 10 43 (26.5cm) 44 10 9.5 44 (27cm)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 Pair of Insoles