B07NHZSMQH Carbon Fiber Full Shoe Semi-Rigid Insert 30 cm Men’s Size 13

MINIMAL STIFFENING FLEXIBLE Carbon Fiber Insert SOLD AS A SINGLE PIECE, NOT AS A PAIR; HARD, FLAT CARBON FIBER INSERT can be used in EITHER RIGHT OR LEFT SHOE BY SIMPLY TURNING PRODUCT OVER; Treatment for injuries such as turf-toe, mid-foot sprains, metatarsal stress fractures, toe fractures, hallux limitus, prevention of recurring chronic injuries, and transition from rigid insert to semi-rigid as injury improves
INSERT MUST BE PLACED DIRECTLY UNDER THE REMOVABLE SHOE INSOLE OR UNDER ORTHOTIC; Used by used by professional, college, high school, and recreational athletes, as well as active people such as hikers, walkers, and laborers, recommended by sports orthopedic surgeons, sports medicine physicians, podiatrists, chiropractors, athletic trainers, and physical therapists
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 necessary, measure in inches and use the ruler in the images to determine the appropriate size in centimeters; If in between sizes or half sizes round down to smaller size
RTP Carbon fiber inserts are MADE IN USA, Carbon fiber material is used in the building of airplanes, space technology, race cars and sporting goods equipment for the unique combination of low weight, high stiffness and tremendous durability;
SHOE MUST HAVE REMOVABLE INSOLE; Not designed for tight fitting dress, casual shoes or boots; Works best with active shoes such as athletic shoes, cleats, lace up hiking or work boots or most other shoes that have a removable insert