I looked for several weeks online and in stores for a nice insulated waterproof boot, and wasn't satisfied with anything until I found these.  They were affordable, not too bulky, and cute (in my opinion!)  I wasn't sure what size to order b/c I figured I would be wearing thick, bulky socks, but I took a chance and just ordered my normal size(8.5).  They fit perfectly, are really comfortable, and my feet are definitely the warmest part on my body while I'm taking my dogs on winter walks in sub-freezing temps.