The outside is fleece coating (is that the right word?? It dosen't sound right) left over from the big hoodie I made last year. It's soft and holds it's shape well without being too thick. The lining is from a terry towel sheet I bought a couple of years ago on clearance (my plan was to make beach robes but that never quite happened, lol).
I'm never sure how things I make will be received by my littlest but this one was a hit. She calls it her mouse hat and I agree, the colours definately make it more mouse than bear.
I made medium but I think small would have been better. (She's almost 4 and according to the book, medium fits size 4-6). It took me under two hours to make so I may make another.
I added a tab so that it could be buttoned up as that's a bit more practical than a bow for playing outside. Miss Thing chose the button, which may have helped in the acceptance of the hat ;). Although she loves it, it's been hard to get a decent picture of her in it: here she's shoveling the driveway. She always has her tongue out when she's concentrating so obviously shoveling's tough work!
edited to add: I made a second in small and it fits much better. Although I do think the ears are pretty cute on this one, I actually followed the directions on the second hat and they are even cuter. Now to try to get a picture . . .
Here's the smaller size, it's much better.