The carbon insert also protects your feet and shoes when you're hiking on rugged terrain outdoors, it can effectively prevent the shoes from over twisting and the puncture of sharp objects. Carbon
fiber material is used in medical,airplanes, space technology, race cars and sporting goods equipment for the unique combination of lightweight, high stiffness and durability. Very thin thickness of carbon
fiber sheet has enough hardness and strength. For proper fit carbon
fiber insert must be ¼ - ½ inch (approximately 1 cm) shorter than removable insert in shoe (because it is stiff), If in between sizes or half sizes round down to smaller size, and you should use this rigid insole below your original removable insole. Carbon
fiber insert thickness:1.2mm , they are light and thin. They can be worn on your right or left foot. The flat carbon
fiber insole can reduce foot pain and supports foot recovery, treatment for injuries such as turf-toe, mortons toe, mid-foot sprains, metatarsal stress fractures, toe fractures, hallux limitus, hallux rigidus, lis franc ,arthritis, forefoot trauma - sprained toe. Prevention of recurring chronic injuries.Best Sellers Rank: See Top 100 in Health & Household. Unit Count: 1.00 Count. Special Feature: Lightweight. Item Form: Foam. Material: Carbon
Fiber. Brand: Leeuoe. : B098BM7NW1. Manufacturer: cncarbonfiber. Date First Available: July 11, 2021. Package Dimensions: 12.56 x 4.61 x 0.55 inches; 2.4 Ounces.