Sierra Designs Nitro 20 Degree 800 Fill DriDown Ultralight Sleeping Bag for Backpacking, Camping & Hiking - Men & Women's Lightweight Down Sleeping Bag Under 2lbs - Perfect for Cold Weather Adventures & Outdoor Exploration

The first thing you need to know about this bag is that it's not really a sleeping bag...and it's not really a quilt, it's something in between. I hate hate hate zippers and so I gave this a try. I wasn't sure about it at first, but after using it in temps into the high 30's I can say it works. I'm a side sleeper and I tend to scrunch up into a fetal position. Traditional mummy bags make me claustrophobic, but the Cloud 20 just lets me move underneath it. After using this bag for a year I've come to love it. Now I'm looking hard at the Nitro quilts to shave off even more weight. This bag has given me the confidence to give a real quilt a try.If you want a simple to use bag that is warm enough for three season use that doesn't make you feel hemmed in then this bag is probably a good choice for you.