I was curious if anyone here has experience with insulBrite? It appears to be a woven polyester with mylar/reflective barrier sewn together.
Commonly used for pot holders and to insulate casseroles, and would be great for pot cozies.
My question is, would something like this be a good "inner layer" to boost the effectiveness of an underquilt, and possibly work for middle of summer? It says it is breathable, but also mentions condensation from hot containers.
This is a link to a sewing site with tips for use. https://sewingiscool.com/insulbrite-instructions-directions/
 It runs around 8 bucks a yard, 45" wide.