Just got back from Denali and realized I have no use for this sleeping bag anymore since I'm not going back to Denali again and since I live in California where the weather doesn't get very cold.
** Sleeping bag **
This is a -40 Marmot CWM Membrane bag that I purchased a month or two ago from REI (they no longer sell the -40 at this time of year, but REI still sells the -20 F version called the COL Membrane ). The Membrane version is sometimes referred to as the EQ version, and this just means that it has Marmot's waterproof treatment, which worked very well in my experience. Full specs available at the Marmot CWM -40 webpage.
I only used the bag for 2 weeks on the mountain, and slept in long underwear and pants and shirt and hat, so there was very little skin-to-bag contact and hence the bag is very clean.
The bag is the regular length, zipper on the right (meaning that when you are lying on your back, zipper is on the left).
The -40 bag was awesome on the mountain. It's 800+ fill, and Marmot's sleeping bags are very conservative on the temperature rating, so this is a warm bag! It weights 4 lbs 8 oz (and 44 oz of down fill). The -20 Col version weights 3 lbs 14 oz (38 oz fill) and is only $60 cheaper. On Denali, our initial loads were 135 lbs / person, and the extra 10 oz of weight in the -40 bag compared to the -20 bag was well worth it.
It's a -40 bag, so it's bulkier than your summer bag of course. I'll include the compression sack that I used.
I bought the bag for $679 just a month ago, and I'm asking $450 for it now.
Below are pictures of the sleeping bag. The water bottle is included for size comparison and is not for sale. I'm in SoCal, so this will probably need to be shipped. I can cover shipping. I prefer paypal.
If interested, send me a PM, or even better, email me at email@example.com.