Originally Posted by Madison320
You're right. I tried it for real saturday night. It got down to the upper 30's. I was really cold. It was a lonnngggg night! It felt like I was sleeping on a block of ice.
So you are saying that using the Ridgerest in the upper 30s, it was too cold? Did you happen to notice if you were cold only under your back, or was it your legs and feet also? ( I'm assuming that inadequate top insulation played no part, no drafts causing cold when you tried to use a bag as a quilt?
Anyway, if it was just your back that was cold, just take a 1/2 length $6 Walmart blue pad and put it under ( or on top) of that Ridgerest. That should make a big difference. If it was also your feet and legs, use it full length.
If you think you need full width ( were your arms and shoulders cold?), just cut that WM pad into 2 or more 25" widths and insert into the JRB so that they cover from side to side. Good luck!