I bought these to wear for long days of studying in the library, where my shoes lack warmth and comfort. They are perfect for my purpose, but are certainly not an every-day pair of slippers...

Pros:
1) Comfortable - These are very comfy, mirroring the kind of material/stuffing you'd find on a nice sleeping bag or down-jacket. The material is very fluffy (not as fluffy as the picture would lead you to believe, but fluffy enough), which hugs your foot, and is very satisfying.
2) Warm - The same material that makes these comfy, makes them warm. Whether it's actual goose-down or synthetic down, they hold heat well and keep my toes toasty. The adjustable cinch at the top (see user submitted pictures) of the slipper opening allows you to adjust the air flow in/out of the top of the slipper; letting you decide just how warm you want it to be within.
3) Great Fit - The cinch at the top also keeps the slipper in place on your foot. In combination with the very cushioned down-like stuffing, the slipper is a very good fit, since it can accommodate to +/- 1 the listed shoe size of the slipper.
4) Solid Construction - There's no getting around the fact that the seams are sewn tight. This is definitely not some piece of quickly assembled garbage. I will definitely be taking these on my next camping trip.

Cons:
1) Barely Any Sole - The "sole" in this slipper is basically a piece of wool-like material. As such, this is definitely not a slipper for walking/daily house-hold use. The floor is hard against your gait, and these are better suited for lounging or cold feet in situations where you are not moving around.
2) No Traction - The bottom of the slipper has some type of rough/resistant covering (akin to vinyl). Which makes them resistant to wear, I suppose, but in the process, much more apt to slipping and sliding. Again, these slippers were definitely not designed for the purpose of walking around/daily household slipper use.

Overall, for my purpose these slippers really fit the bill. With the price in mind, these are of really great value. I would have loved to be able to use them around the house, but due to the very thin sole and lack of traction, I cannot. I suppose that it will most likely make these slippers last longer, since I won't be using them every day...