Sindoror Extra Fine Insole - Size 42 is lined with microfiber, soft and comfortable fabric, and has an extra flat design, which makes it suitable for any type of shoe. It is anatomical and includes metatarsal elevation and interdigital elevation, for better alignment of the flanges. Its use prevents and relieves heel and metatarsal pain, prevents hardness and calluses. It is breathable, leaving feet dry. Machine washable at 35ºC. Size 42 (European measure of foot number).