Men's Balenciaga size 40

Men's Balenciaga sneakers size 40 euro size. Never been worn, they've only been tried one. I have the original box and dust bag they come in. Bought them at barneys when they had them for a limited time, so they're not sold anymore. I typically wear a 7 in men but they're about a size maybe even a size and a half too big. Would recommend for someone who is a size 8 or 8.5 US size to wear these. Let me know if you're interested. I bought them for $655 but I am selling them for $550 or best offer.