Dr. Martens Premium insoles contain the same benefits as our comfort insoles but include a ‘Skeletal Support Module' to help stabilise your heel and arch when you walk. It offers Smartmask® technology, a custom blended polyurethane foam with millions of tiny air bubbles which cushion your every step while holding your foot in the correct anatomical position. It also features Agion® antimicrobial treatment which inhibits the growth of bacteria.