Downmat UL - 5.9 R value
Small, 64x20, 16.7oz
Synmat UL - 3.1 R value
Small, 64x20, 15.2oz
Seems to me to be a no brainer. 2.8 R value for 1.5 oz.
Is there something I'm failing to consider? How do their packed sizes compare?
Why would I choose the Synmat over the Downmat? Moisture gets trapped in the down?
Has anyone had experience with the Downmat UL XS (47x20) and a CCF piece beneath your feet?