Base Protection Dry'n Air Scan&Fit Record Insoles - MediumFeatures CE certified Electronic devices protection from electrostatic discharges Medium support Arch support helps support the foot and provides maximum comfort Air circulation keeping the foot cool and dry Cushioning area positioned in the heel relieves pressure Discharge area in the centre of the heel to prevent inflammation Antimicrobial and anti odour properties Class I medical device Materials Upper: Polyurethane