I purchased the chocolate Stingers as a gift for a man - he loves them! Really keep feet toasty in cold weather (he has yet to try them in the summer). The sizes are confusing, however - that's why I give it 4 instead of 5 stars. He normally wears a 12.5 and based on the other reviews, I ordered him a 12, thinking that they will run big. Those were too small. We returned them for a 13. Those are a bit too big, but he loves them anyway. He likes to wear them without socks. The color is great. I just wished they made half sizes.
And for those of you who are confused about the sheepskin versus the suede/wool: The sheepskin, like these, are made from one piece, which includes the wool on the inside, and the outside is a softer skin than the suede. In the suede shoes, the wool is actually sewn to the back of the skin. And the sheepskin are more comfortable, but the others are still really comfortable (I have them in the women's). It's the difference between a Rolls Royce and a Mercedes (Mercedes is still super comfy, but the Rolls is luxurious).