The Ultra Work Insoles mold to the foot for personalized fit, comfort, and support every day. Targeted heel protection helps absorb shock with every foot strike as a antimicrobial top coat protects against odor-causing bacteria. The Ultra Work Insoles are ideal for any type of work boots, casual shoes, or sneakers.Features: Airplus Ultra Work Insoles are designed with a durable memory foam structure that forms to your foot.Silvadur Technology helps inhibit the growth of odor-causing bacteria Targeted heel protection absorbs shock Soft Memory Foam - cushioning forms to your foot for personalized fit1 pair of insoles