Double-layered walking aid with anti-slip pads. I opened it to use on a trip and tried it on the shoes I planned to wear, but I didn't use it because it didn't snow. Size S fit perfectly on a 23cm shoe. Size XL was a little tight on a 29cm shoe. - Type: Anti-slip - Material: Rubber - Color: Black and Yellow - Design: Double-layered - Purpose: Walking aid - Features: With anti-slip pads Thank you for looking.