I like these slippers but they run a size low in my opinion. I wear 10 but need 12's in these slippers as a US (NOT UK) 11 are small.
I am having a hard time replacing these slippers as well through Shoes.com but amazon is running a a to z process for me.  I will see then if the 12 size fit better for my 10 size foot.
The bottoms are made of a leather and can be prone to absorption.  Other than that they seem to stay on foot and make a great sheepskin slippers.