Compressibility
The Featherlite easily compresses into the small dry bag provided with the sleeping bag, down to about twice the size of a 1-liter Nalgene bottle.

Warmth
Consistent to its rating of 41 degrees, the bag was quite comfortable in the mid to low 40s, although the foot bed could have used some additional insulation. When the temperature dipped into the high 30s, I did have to pull on another jacket to sleep more comfortably. Montane uses certified cruelty free down from Allied Feather and Down which founded the Responsible Down Standard (RDS).

Overall Comfort
This sleeping bag has a super silky feel and is roomy and warm especially for its weight. In addition to the bag’s beautiful texture, the pockets, excellent zipper, very comfortable hood, unique drawcords and roominess without excess dead space all made for an extremely comfortable sleeping bag.

Durability
The Featherlite did not suffer any noticeable wear and tear and held up well during the testing phase. It is covered with a PERTEX® Quantum Rip-stop that is very lightweight, breathable and has a beautiful feel in addition to being water repellant. I particularly loved the lining, which was exceptionally soft, comfortable, breathable and fast drying.

Features
The Featherlite 3D shaped hood is designed to prevent down migration and limit cold spots. Instead of a single drawcord around the head, this bag features a second drawcord to cinch the bag around the neck area and draw insulation there. I loved this feature; being able to cinch around my neck and less around my head provided more effective insulation while also making me less prone to claustrophobia. The soft brushed microfleece inner layer near the chin and mouth area was a nice touch.

The Featherlite also has a very small zippered pocket at the top of the bag, suitable for small items such as earplugs, tissues, a Buff or music source. There is also an internal stretch mesh pocket on the right hand side of the bag advertised to hold a water bottle though it is not big enough for the very common 1-liter Nalgene bottle. The pocket was, however, useful for a phone and hat and other items that don’t fit in the other small zippered pocket mentioned above. 

The underside of the bag is dotted with what are advertised as non-slip silicone roundels designed to help grip your sleeping mat or bivvy bag. While nice to look at, they did not have any non-slip effect on my Therm-a-Rest all-season sleeping pad (besides, since I am an active sleeper, I prefer the bag to move with me). 

The foot box is contoured upwards for comfortable upright positioning, for those who enjoy lying on their back. Although my feet typically flop sideways while lying on my back (I think most everyone’s do), I still find the additional room in the foot box goes a long way to greater overall comfort (if not potentially negatively affecting warmth which it may have done in this case). The inside/outside of the foot box also has loops for storage and drying.

The ¾ length YKK VISLON® zipper with stitched baffles along the full length of the zipper performed wonderfully; the zipper did not ever snag and the glow-in-the-dark tab was an excellent touch that I wish more manufacturers would adopt.