?SOLD AS 1 PC?Carbon fiber insole is sold as a SINGLE PIECE, NOT A PAIR. Just flip it over, it can be worn on your right or left foot. It is universal rigid insole, which works for men and women. If you want a pair insole, please choose 1 pair option. ?RELIEVE YOUR PAIN?This Carbon Fiber Insoles is 1.2mm thick 180 degrees flat plate, allow minimized bending (minimum flexibility) with optimized stability. The Rigid Shoe Inserts add stiffness to shoes to limit foot motion and to take pressure off from metatarsals, help reduce foot pain and foot recovery. Suitable for Morton's Toe treatments, Turf Toe, Hallux Rigidus, Foot Fractures,Toe Joint Pain, Plantar Fasciitis, Bunion, Big Toe Pain, Hallux Limitus and Arthritis. Can be used as Post Op Shoe Alternative. ?GOOD SUPPORT FOR HIKING ADVENTURES?The rigid toe plate has good support and stability, can be bent and return to its original shape. Allows you to jump higher, be more explosive, have better injury protection and recovery. Rigid Shoe Insert prevents your feet from getting tired in your daily activities, works well in various sports activities such as daily Walking, Trekking, Hiking, Running, Football or Basketball. The rigid toe plate can be used in different athletic shoes like sneakers, hiking boots, baseball, tennis, golf, football, or basketball shoes. Not for dress shoes and high heels. ?PREMIUM CARBON FIBER MATERIAL?Rigid carbon fiber shoe insert is made of 3K twill plain real carbon fiber, it features high strength and stiffness, lightweight, thin, durability and corrosion-free. ?FIND THE RIGHT SIZE?Please select right insole length according to your shoe size from the picture. The carbon fiber rigid plate need to be ¼ - ½ inch inch shorter than your removable shoe insert in shoe. It will help you slip carbon fiber insole in and out of your shoe easily. NOTE: Please use this carbon fiber insert below your original removable shoe insole or under orthotic.