#1 grade leather and wool.I would wear these boots for everyda.Alaska where I live now has 3 foot of snow.I wear a 8 1/2 or 9 sometimes 10.I wear Dansko's clogs and boots( 39 ).I wanted a wedge so ordered this Ugg Boot,love them,but they are really tight across top of my foot,I am hoping,with a little wear,they stretch out.