I tried these on once indoors, but the size didn't fit, so I'm listing them for sale. Please refrain from purchasing if you are sensitive to such matters. Cushion Mesh Shoes, Set of 4 Size: M (Foot sole = Length: 4.5cm, Width: 4cm) [For small dogs] (Please allow for some margin of error. Size measurements are taken from the inside sole of the shoe, along the seam where it meets the side.)