Insul-fleece Craft Pack : Metalized Mylar Insulated Interfacing

Metalized mylar is layered between polyester fleece to create a high-quality barrier that reflects* heat or cold. This special combination of materials is very flexible and easy to sew through. Once it is sewn into a project, it can be machine washed and tumble dried with no bunching! A handy pack of a - yard cut is enough for a large lunch bag or several potholders.