3/4 Length Women 6-7 Men 7-8 Clinically Designed Doctor Recommended At The Heart Of Every Spenco Rx Product Is A Unique Spencore Layer Spencos Cushion Layer That Absorbs Shock Reduces Friction And Improves Overall Foot Comfort Soft Durable Arch Support Soothes Tired Feet And Sore Arches Improves Body Alignment Absorbs Shock And Reduces Friction That Can Cause Blisters Unconditionally Guaranteed For One Full Year