This may be way out in left field
DD has, to her utter astonishment, become a hockey Mom. Both DGD's are now playing. Weekends are spent in a cold arena. I would like to make her an arena cushion. I was wondering if I could use a double layer of the stuff you put in oven mitts put shiny side out, plus a couple of layers of batting between them, as the filler. Do you think it would actually reflect her own body heat back to her, as well as reflecting the cold concrete bench?