Adidas Navy and White Slide Sandals size 9

I’m a size 10 and I wore these one time. Length wise, they fit perfectly, they’re just too ‘roomy’ and don’t stay on my feet. I’m guessing they may be a mens 9. So if you have a thicker foot and are a women’s size 10, these will fit great! Bought directly from Nordstrom online. Classic Adidas slide sandals. Navy base with white stripes. Comfortable and stylish.