PRODUCT SPECIFIC INFORMATION: Carbon fiber shoe insole is sold as a SINGLE plate. For both shoes, you will need to order two inserts. This unisex insert can be used for either foot - just flipping it over. Please measure your shoe insole before ordering carbon fiber orthotic insert. For more sizing details, look at the fourth picture. NARROW INSOLE DESIGN: Our insert is only 1.2mm thick, durable, and lightweight. It doesn't damage shoes or cause rusting as heavy spring steel plates do. Carbon fiber footplate is used for extra foot support during recovery or to add some stiffness to shoes. carbon fiber foot plate insert is an excellent insole for women or men with narrow feet. KEEPS YOUR FOOT STABLE DURING RECOVERY: Turf toe orthotic flat and rigid design limits foot motion, providing pressure relief on metatarsals - Ideal for preventing and treating. It also reduces foot pain caused by Midfoot Arthritis. In some cases, carbon insole can be used instead of a post-op shoe. These inserts are recommended by many of our clients. Support Recovery: Morton's Toe, Foot Fractures, Mid-foot Sprains, Lis Franc, Metatarsalgia, Hallux Limitus, Hallux Rigidus insole, Acute Turf Toe, and Forefoot Fractures, Arthritis, Metatarsal Stress Fractures. Charcot's foot, prevention of recurring chronic injuries. ADD EXTRA RIGIDITY TO YOUR ACTIVE FOOTWEAR: Carbon fiber shoe insert is a great shoe stiffener. This rigid shoe insert keeps your feet from getting tired during sports activities and long hikes. Suitable for different athletic shoes like sneakers, hiking boots, baseball, football, or basketball shoes. Hikers and trakkers use carbon plates to make soles stiffer and less sensitive to rocks and mountainous terrain - an excellent alternative to trekking boots. Suit for Sneakers: Golf shoes, Tennis shoes, Soccer shoes, Athletic shoe Running shoes, Outdoor shoes, Hiking shoes, Basketball shoes, not for High heels, Slippers and Dress shoes.