I have a prosthetic left leg with a sz 10.5 foot. I am also missing all the toes on my R foot. In order to get the cleats in the correct place, I have to wear a 10.5 on the L and an 8 on the R. Consequently I have a spare L in an 8 and a spare R in a 10.5. If anyone can use these odd size single sandals, I will ship for the cost of shipping only.