Medium: 6.5/7.5
Large: 8/9
 
We have duplicates and more sizing availble in store.
Sizes are as follows: 
S 5/6
M 6.5/7.5
L 8/9
XL 9.5/10.5
 
If you're looking for a size that's not available online, please contact u at 916.965.5542 and we can check our in-store inventory.