The basics Spenco Performance Gel Insoles set the standard in gel insoles with guaranteed comfort! The benefits The true heel cupping gives extra cushioning and stability to the back of your foot and supports the arch at the middle. The uses The Slip-Resist design helps keep the insole in place while the antimicrobial top cloth helps eliminate odor causing bacteria and reduces friction. The bottom line The dual density Thermo Polyurethane Rubber gel combines superior cushioning and energy return where the foot needs it the most. This design will help reduce fatigue on the job keeping you going.