Renvy Leopard Wedge Mules

NWOT Sana mules by Renvy, leather soles, calf hair upper, 4" wedge. they are a bit too small due to the lip around the back of heal area. My foot just doesn't slip fully inside, so I am listing these as a 7 instead of the 7.5 they are labeled. I have tried on 2 or 3 times, never worn more than a minute or two.