Asked this over in fabrics, didn't get any responces, will try here. Picked up some Pellon insul-fleece at Hancock's to sandwich inside a PLUQ. This is a poly fleece on a perforated mylar. Not much info on the Pellon site. My granddaughter wrapped up in the pl with the insul-fleece pinned inside, came out fairly quick, said it was too hot. Has anyone had any experience with this stuff? I'll be trying a temp pluq soon and report.