These size 11 to 12 Safeguard Firm Shell Medium Orthotic Insoles have unique biochemical control and cushioning to aid whichever of the user\'s feet is at risk.Ths foot can suffer from a number of different problems including weakness of the supporting muscles of the arch toe joint, restriction of foot movement, loss of sensation and also dryness of the foot\'s skin. All of these maladies can be treated effectively by the use of these support insoles. Fitted with a unique antimicrobial top cover with integrated silver, these high grade feet insoles also help to reduce the prevalence of pathogenic bacteria. The Medial Arch Support and Retron Midlayer provides additional protective cushioning for the heel and forefoot. To allow for custom placement the Safeguard Firm Shell Medium Orthotic Insoles are supplied with adhesive backed met domes. This pair of firm Insoles provide higher control for heavier patients or high levels of activity. These are the firm versions of the Safeguard Insoles with medium retron midlayers; shells with other densities, different retron midlayers as well as other sizes are also available in this section of our website.