Size 41/10 Calla slippers are made from new and/or discarded rugs in Morocco and sold out of a Paris flagship store. All Babouches are one of a kind! The size of these four pair is 41 or an American size 10. These are fantastic shoes to pair with your outfit. I wear them all the time. They have leather soles but are easily transformed to a rubber sole. It’s not recommended to wear them while it’s raining. I have worn this pair once.