Regetta Lupe Insole Size: M (21.5～25.0cm) Washed with dish soap. When placed in my shoes, I can walk with the same comfortable feel as Regetta shoes. Can be used in shoes other than sandals. This is a used item. I used it twice in sneakers with socks. Please check the condition carefully in the photos. I no longer need it because I purchased a medical insole. Size: 23.5cm