Excellent used condition, worn only once or twice and wiped clean. All manmade materials. The strap is Velcro and can be adjusted as shown. The true size is EU 40, which translates to a US size 9.5-10 (see size chart in photos). Please see photos for additional details, and don’t hesitate to reach out with further questions. New to Posh?? Use code KIKIDEE1992 when prompted at sign-up, and you’ll get a $10 credit towards your first order. Thanks for stopping by and happy shopping!!