Review on Alplive T400 Ultralight Backpacking 32-50F Down Sleeping Bag - 27Oz Ultra Compact 650 Fill Power Envelope For Hiking, Camping And Backcountry - Lightweight & Compressible by Chris Budenski

Pros: light, the compression sack is amazing, easy to conform to your situationCons: use a bag liner. The waterproofing is a little too good. It is definitely a summer bag. Below 50 it's just not warm enough.General opinion: I love it! I'm fine with a summer only bag and the weight and stuff sack make up for having a third sleeping bag option. It packs down tiny and it is perfect for ultra light backpacking. No, it won't do the trick in sub zero, but in summer the weight and size difference makes it worth the purchase!