My slipper of choice has been sock-like but now that I have hard wood floors, I need something better to keep my feet warm.  I bought these boots because my MukLuk knee high boots don't fit over my jeans.

I am pleased with my purchase and wear them when I take off my work sneaks and stay in my jeans.  The "fur" collar can be worn up or down (just about covers my ankle bone) , they are comfortable, have no skid soles, and are machine washable (unlike MukLuk's).

The color is more burgundy and the size seems to run small to me.  I wear a size 9 sneaker and the slippers are perfect when not wearing a heavy sock.  Add a heavy sock or you lean towards a Size 10?  I'd go for an XL.