6" (152mm) high heel, 1 3/4" (45mm) black platform heel, velvet high heels over the knee platform boots with elastic boot shaft. Over the knee stocking boots with platform sole, closed heel at the back and closed toe at the front. The footbed is padded with an insole for high wearing comfort. Platform over the knee stretch boots to pull on, black stretch upper made of velvet fabric. Pleaser high heels women's boots are made with love! No zipper.