Niufuni Red Strappy Platform High Stiletto Heel Has 45 stamped on the bottom. I believe that would be a UK 11 or a US 13. I feel as if I should prepare a waiver for safety because these heels are so high =) Very Good condition. Minimal to no wear on tread. Do not have the original box. Were part of a collection by my deceased partner. I share my home with 2 cats. Every effort and precaution is taken to isolate closet items from fur babies. Thanks for looking.