A few S&P authors (JR & some at Prepper Press) have recommended Wiggy's. After looking at how heavy they are I'm wondering why? I need cold weather bags and before I purchase one I wanted to make sure they were the kind to buy. The fact they zipper together into an Adam and Eve setup is a huge selling point for me, along with the sleep system with the two bags. I also want something durable that can get wet, so I like they aren't down. They also aren't bright colors like you would find at REI. The only thing keeping me is how much room they would take up in my pack camping or in my BOB.