Gianvito Rossi Shanti Thong US Size 8.5

I am a US size 8.5 and these fit. Bought them for my wedding but I am not talented enough to walk in designer heels. Tried to return them and the company said I couldn't. From the website: Crafted from leather and metallic-effect suede, Shanti Thong 70 is a round-toe thong sandal with a 70mm stiletto heel. The upper is embellished with Chakra-inspired natural cabochon stones and metallic gold studs. Handmade in Italy. Composition: 80% SUEDE+20% NAPPA Heel height: 2.8 inches / 70 mm Model Code: G15230.70RIC