Marmot NanoWave 35

Well built. Great for summer nights but not for cold weather.

I am a Florida hiker/backpacker. I am one of those people northerners laugh at because I wear winter jackets when the weather reaches 65°F and below. Knowing my blood is thinner and I have my own internal insulation (weighing in at 150 lbs), I was hoping this bag would keep me warm.

Although this bag is rated to 35°F, I was cooly uncomfortable at 52°F and below. On all occasions where the weather dipped below 55°, I packed wool pajamas, a sleeping bag liner, and other items to layer on after realizing this bag would not protect me in cold weather.

The only thing that helped was my heat reflected emergency blanket. After wrapping myself in this blanket, I was finally warm and could sleep. The bag is very well constructed, the zipper is easy to pull, and it is breathable in warmer weather. It reduces to a nice compact size and fluffs out nicely when unpacked. It has a nice pocket where I stack my clothes for a pillow. The pocket keeps my "pillow" from moving around during the night. 

I used this bag over the last two years on the AT and in Florida when car camping and backpacking. I absolutely LOVE this bag and wish it would keep me warm in cooler/cold weather.