firm Adjustable Arch Support Insole helps Control Stabilize And Balance The Foot heat Moldable For A Custom Fit. Spencore Layer Absorbs Shock And Reduces Friction To Improve Overall Foot Comfort. sizing: for Half Sizes Order The Next Size Down for Example F You Normally Wear Size 10.5 Order A Size 10 features: moldable Orthotic Cradle heel-to-toe Spencore Material technical Topcloth silpure Antimicrobial