User Review: Mountain Hardwear Lamina 0°
Fill: ThermicMicro (Mountain Hardwear's own insulation)
Temperature Rating: -15 F
Price Paid: $188
Bought this bag before a month long trip to Argentina. It was used in the Precordillera and Andes Mts. during the winter at up to 3600m elevation.
Bag was extremely toasty even when temperatures reached well below freezing. Bag is roomy and durable, yet compress into a very manageable size.
I chose this bag because it compressed nearly as much as a Primaloft bag but had a -15 rating, something which you will be hard pressed to find with Primaloft.
Bag is a little on the heavy side (I own the long model) but it is within a pound of most other comparable bags.
I have also used this bag camping in Maine during the fall, and despite much warmer temperatures, the bags versatile zippers allowed for plenty of venting options.
Best features were the double zippers that allowed you to open up the footbox for ventilation.