Ozark Trail 40F Mummy Sleeping Bag

The bag is very lightweight and comes with a compression sack. It's compact, and keeps you warm and comfortable throughout the night. It has ClimaTech fiber for added warmth, comfort, and durability.

The bag says it is a cool weather 40 degree bag, but it keeps you warm until around 35 degrees (Fahrenheit). It's 33.5 inches in width, and 86.5 inches in length. It's thin, but very comfortable with a pad.  The foot room is good, too.

It is easy to get in and out of, since the zipper runs down to your feet. It is water resistant, but not waterproof, and it stores extremely well. When it's in the compression sack it comes with, it's about 12 inches tall and 5 inches wide. It puffs up about half an inch, so kind of good.

It's easy to use, and has an inside zipper pocket, anti-snag zipper, full neck baffle, and ClimaTech fiber for warmth. It's sort of fragile, but very good for backpacking.

Truly horrible.

Bought this for backpacking because it is lightweight and packs small, but it is a complete waste of $45. Even with clothes, a thin liner and a fleece liner inside it, the bag could not dispel the cold. There was zero insulation properties as far as I could tell. It did not even get down to 40, more like upper 40s at the most and probably low 50s when I used it.

I am going to try to return.

I used this bag two nights last weekend and found it was too cold on its own—lowest temp was 51 degrees each of those nights.

I agree with almost everything commented by Eric.

I prefer a cool sleeping environment. However, I used this bag two nights last weekend and found it was too cold on its own—lowest temp was 51 degrees each of those nights. I was in a large tent (admittedly, a smaller tent would have been better) with one other person. I had to add a fleece sleeping bag for more insulation.

I don't recommend this sleeping bag for less than 60 degrees.