Joannes Fabrics has this material that is used as sun blocking curtain material
is like this arrangement stacked:
A quilted cotton top cover,
thin insulation layer like batting,
essentially a rubbery emergency blanket,
thin insulated layer like inside a pot holder(a space blanket like/batting layer combo...
Other than being a bit bulky seem ideal for Spring/Summer UQ or underlayer inside..
Anyone know this stuff and tried it???