I've owned two of the Puffy Kachula blanket for about two years and finally got a chance to use one in the snow. It is awesome :). While in Tahoe one night I had a few drinks and decided to head down to the lake. I brought my Kachula blanket with me and it didn't just keep me warm, it kept me dry. I sat there with only the blanket between my butt and the snow, and I felt absolutely comfortable.
I use the blanket often and it holds up. Over the time I've had it, I've used it every way advertised and it does not disappoint. Hell even my dog loves the thing! If Coalatree ever makes a version that uses the same material as their hoodie and sweats, I'm buying it immediately! I own multiple Coalatree goods and will surely buy more in the future :)