Okabashi Breeze Flip Flops Size ML (8-9) I wear a 8.5-9 and they fit me Premium arch support and sculpted heel cup for stability and support provide proper alignment to help prevent and reduce foot pain. Soft upper strap. Slip-resistant and non-marking sole. Waterproof and machine washable - color won't fade. Bio-based material contains 45% soy by weight and is BPA, latex, rubber, and phthalate-free.