PediFixâ€™s Gelstep Insole combines Silcone S+Gel technology with anti-microbial top covers. GelSmart silicone insoles are fabricated with 100% medical grade silicone that is soft, hypoallergenic, durable and washable. The anti-microbial top cover absorbs odor and prevents bacterial growth. The complete line of GelStep insoles are hypo-allergenic, dermatologist tested and diabetic friendly. The insoles are easy to wash with soap and water to maintain the longevity.