Compressibility
Since the Boot Jack uses 600-fill down for insulation, it  doesn’t pack as small as many of the bags we checked out but beats a few. It’s much more compact that the Blue Kazoo and nearly as small as compressible as the 800-fill Backcountry Bed.

Warmth to Weight
I slept comfortably warm during nights that hovered around freezing, while some of our testers felt even that was too cold for this bag so warmth isn’t great. But this is a lightweight bag despite using 600-fill down–the third lightest in the class in fact–so the warmth-to-weight ratio is favorable. 

Comfort
I found this bag a comfortable nest from the hood to the knees. Below there, I felt constrained. Perhaps it was my size 12 feet, but the footbox of the Boot Jack felt narrow and short. Others had less of an issue with that, though some of them claimed the hood was too constraining and uncomfortable. Generally, the bag offers some wiggle room without excessive ‘cold sink’ space.

Durability
Despite being used extensively on rocky river banks and sandy beaches, the  Boot Jack showed only normal wear, except for a few loose threads along the zipper. That zipper, though, occasionally caught fabric so snags were a problem to watch for.

Value
Though I’d quibble with the assigned temperature rating, the Boot Jack provided us with solid, dependable performance at a more than reasonable price. Definitely a good value, especially for ‘warm’ sleepers.