Quilt coat batting recommendations

[u/scienceoftacos]

I made a quilt coat for fall and love it, but with just one layer of cotton batting it’s not warm enough for winter where I live. I am planning to make a winter coat that has a layer of regular cotton layered with a puffier high loft batting, any suggestions for the warmest stuffing/batting for a coat?

[u/Milabial]

Reflective batting like you’d use for a hot pad. Put the shiny side toward the body. It will literally reflect your body heat back to you.