Marmot and customer service.
So I just had to send this bag in because one of the seams came apart where the little triangle shaped piece is at the complete base of the zipper, near the foot box. This most likely never happens, and aside from that little misfortune, the bag is top shelf. Loft is great, and the large foot box is also a big plus for me for I'm a bigger dude, so I got the long, left-zip. Like always, Backcountry was great about replacing the bag within literally 3 days. I'm a big fan of Marmot's gear, and would recommend this bag for anyone in the mountains, I live in Montana so this bag is perfect for me. I team it with my old school Bibler I-Tent and I'm the driest dude in camp.