Sidas Winter 3Feet Low Insole 329501 - REFERENCE: CSE3FWI12-LO Specifically designed for low arch feet. Need: stability. 3Feet (R) answer: -Optimised foot stability. - Aluminium film for insulation. - Anatomical construction adapted to low arch feet. - Foam pad for comfort 1. Velvet topcover: Comfort & durability 2. EVA shell LOW arch shape: Foot support & pressure distribution 3. EVA pad: Cushioning 4. Aluminium film: Insulation Sidas Winter 3Feet Low Insole | Medium | Christy Sports