"Metatarsal insole using Metax. Recommended for those who often walk in hard shoes such as pumps or heels! The world's first insole that focuses on the metatarsals. The silicone sole pads stretch the muscles of the soles of your feet and adjust the horizontal arches, so your feet won't get tired even when you walk. You can use scissors to cut it to fit your shoes. Material: Body/acrylic foam, fabric/100% polyester, pad/silicone Technology: Metax "