Rating: 5 / 5
In the past year I have become a cold sleeper, and find even in summer I need a warm sleeping bag. I choose the Sub Kilo based on materials, weight, price and REI's incredible return policy.
Overall, in the past 6 months I have been very happy with the bag. While only a 750 fill it is a very puffy bag. The material has a nice faux silk feel, and warms up fast. It has done well in high humidity also.
The silnylon compression/stuff sack is a nice touch.
The weight comes in at the advertised weight, 1 lb 15 ounces. A bit on the heavy side for a 15* bag, but for $229, one cannot complain.
For me, the reasons I truly like the bag is I don't get cold spots on my back at night, even when I toss and turn. I enjoy the fabric's feel and I like how small the bag packs up.