I bought the black FitFlop Snugger boots, and I think they're the coolest-looking winter boots I've had in a long time.  They remind me of my moonboots I had back in elementary school. They're super-lightweight, warm, and waterproof enough for my use.  I'm not out tromping through inches of snow or using them to sled-ride for hours.  Mainly, I'm using them for wearing around on my daily errands in the wintertime, when I wouldn't want to wear regular boots or shoes.  My feet haven't been even a little cold or wet in them yet, and I haven't found them slippery in less-than-ideal conditions.  So far, so good!

The fit is a little odd.  I'm not talking so much about the footbed, but the boot as a whole.  I'm fairly petite, but I have big calves (14.5") for my size and wide feet. The footbed of these boots accommodates my feet very comfortably, even to the point of being a little bit sloppy-fitting, if I wear thin socks.  But the shaft of the boot, especially toward the top, fits my calves like they're shrink-wrapped.  Not uncomfortable, thanks to the elastic on the back, but very snug, with no way to give them a little more give.  There's a Velcro-closed gusset for ease getting the boots on and off, but that's not to be misconstrued as any kind of adjustability.  So the snug fit at the top, combined with LOTS of room at the ankles (which don't even touch the inside of the boots at all!) and the very roomy fit on my feet themselves made for a need to get used to the way the Snugger Boots feel.  Once I got past those little issues, I was delighted at how comfortable the Snugger Boots are.  I can wear them for an entire day and not feel like my feet have been reduced to two bloody stumps after a day on my feet.  The "walking in sand" feeling of the regular FitFlops isn't so pronounced with the boots, but maybe because they're so snug on my calves, I know the boots aren't going anywhere, and I do have to concentrate on keeping the regular FitFlops on my feet. But the way I see it, the Snuggers are a good solid pair of winter boots for casual wear, and they make walking around more fun, and if it's more fun, I'll walk around more.  So at least there's that cardiovascular benefit.  And, they look cool.