The price is right, and the bag is a dream-generating cocoon, but when it comes time to pack away, the Lone Pine bulges – it is definitely a beefy bundle of comfort. The roomy interior provided for restful sleep for all of us who used it, but some of the more slender campers deemed it too roomy, with lots of extra space that sucked away heat.

Compressibility
The bag stuffs tightly into a 7×15 inch sack, but further compression is minimal – we could scrunch it down just another couple inches in length. Fortunately, stuffing doesn’t seem to affect the loftiness of the proprietary G3 synthetic insulation. The bag plumps up nicely after just a few minutes of being unpacked and spread out.

Warmth to Weight ratio
That lofty insulation helps seal in heat, but the roomy cut proved too drafty for some testers. Our smaller (5’6”) testers complained of being cold in this bag every night she used it, forcing her to add layers of clothing throughout the nights as she shivered away in the high desert of Washington’s Columbia Plateau. On the other hand, I stayed comfortable even with temperatures nearing freezing in the Sierra Nevadas—but I’m a warm sleeper to begin with. The large dead-air voids seemed to be the cause of the cold sleep for some. Add in the nearly 3-pound weight and the bag’s warmth-to-weight ratio edges toward the bottom of the rankings.

Comfort
While extra space can be a cold-air sink, it also adds to comfort as sleepers have room to twist, turn, tuck up their knees and generally wriggle into comfortable positions throughout the night. I also found the generous hood a comfortable addition as it can easily be adjusted for a perfect fit—regardless of sleeping position—with a single drawcord.

Durability
One notable problem I encountered was that the draft tube tended to get sucked into the zipper teeth when tugging the zipper closed quickly. But with a little care while operating the zipper, that problem was cured and the bag itself proved stout and durable.