I bought this over the summer as part off an earlier drop. Love the size, thickness, overall comfort. The stuff sack pump adds weight, but you'll want to use it. Keeps breath moisture and nasties out of your pad innards. i've been using a similar stuff sack/pump for my Big Agnes for years and love it.
Now for the down side: After just a few uses, my pad developed a slow leak. Slow meaning, butt on the cold ground at 4am. Doing a bathtub test with a pad this size was difficult to say the least, but it seems that it might be a leak around the "deflate" valve. I've submitted a request for warranty coverage or repair to Klymit. 4 days and I'm still waiting for a reply. (other companies I deal with get back to me within 48 or less - Big Agness, Zpacks, Enlightened Equip). The size is great for a low mileage 2 person trip. I really wish I had one that functioned properly.