Spenco Performance Gel Insoles set the standard in gel insoles. The dual density Thermo Polyurethane Rubber gel combines superior cushioning and energy return where the foot needs it the most. Correct arch support provides for a better overall fit, comfort and performance while the true heel cupping gives extra cushioning and stability to the heel. The Slip-Resist design helps keep the insole in place while the antimicrobial top cloth helps eliminate odor causing bacteria and reduces friction. With an unconditional one-year guarantee, the Spenco Performance Gel insoles provide activated energy that lasts from start to finish.