tim105623807-0wrote a review of Mountain Hardwear Lamina Z Sleeping Bag: 34 Degree Synthetic on February 16, 2016
Familiarity: I've put it through the wringer
I purchased the Lamina Z Spark to have around in addition to my MH Ratio 32 down bag, simply as an alternative for predictably soggy trips. So far it has worked great. I have had it down into the mid 40s and high 30s and have stayed nice and cozy throughout the night sleeping in just base layers. It is very roomy, .
The Lamina Z Spark is impressively warm for how lightweight it is, and my Large size bag packs down to about 7" x 13" in the compression sack. Minus the stuff sack, my bag is 2-3 ounces heavier than advertised, so if you're picky about that, be forewarned.