"Hey there,
If you are a big person (I personally am over 6'9") this is the sleeping bag for you. It is a 775 fill down bag that is rated to 10 degrees. It is big enough (the extra long version) for me and it only weighs 3 lbs 10 oz (great for such a big bag). If you have never had a marmot before, they are very high quality and have a lifetime warranty. All in all, I love this bag!"