I only wore these once outside and have been storing them in a dark place. Please feel free to leave a comment. Product Description: These knee-high long boots have a voluminous feel with their thick heels and platform. They feature a soft feel thanks to the flexible stretch material. The full-length zipper on the inside solves the problem of long and over-the-knee boots being difficult to put on. Combined with the cushioned insole, these boots are easy to wear and walk in. Size M Heel Height: Approximately 11cm Platform Height: Approximately 6cm Width of instep (around the instep): Approximately 14cm Sole Width: Approximately 8cm Calf circumference (outer): Approximately 35cm Shaft Length: Approximately 40cm