5 of each code: photographed message notes yardage you need.C code (30-33)D codes (34-36)E codes (37-39)G code (43-46)F code (40-42)?Product name Nano silver foot correction mats Lu brand of bootsMaterial Nano-silver material specifications C， D， E， F， GNursingWater hand wash， air dryDual UnitAdaptation symptoms1，9 to 20 year-olds: correction of posture， prevention of kyphosis， chicken， inside and outside the character， flat feet， X / O-type legs and other body deformities.2，20 to 45-year-old young adult: correction of posture， reduce stress， eliminate fatigue， pain relief.3，45 years of age in the elderly: reduce stress， reduce pain， joint protection， to avoid injury.Product Features Adjust your spine and pelvic area to reduce knee， hip， back pain and wrong gait and gait. Insole use of human biomechanics and design， resulting in arch projections and strong， can effectively support the arch of the foot， the foot is not normal dispersion force point， improving the body walking with negative power line medical bio-fiber plastic， can be corrected by a foot disease or damage caused by the collapse of the longitudinal arch， knee varus， valgus and XO-leg heel cushion shocks， improve foot pressure distribution， can play a direct correction.