The 4th Dimension has been discontinued. If you're looking for something new, check out the best cold weather synthetic sleeping bags for 2020.
Historic Range: $199.47-$295.00
Reviewers Paid: $220.00
Well, it's definitely a warm bag. Coldest of cold…
Price Paid: 220?
Well, it's definitely a warm bag. Coldest of cold nights in South America were comfortable. Downside: It's big. It doesn't compress worth a damn so it takes up a bunch of space in your sack. If I could go back in time, I would have spent more to buy a down bag with a Pertex shell. But this certainly has the warmth.