Heat‑resistant fleece used as an insulating liner for projects exposed to hot or cold surfaces. Protects up to about 200 °C / 390 °F when sewn into layers—ideal for potholders, mitts, tea cozies, lunch totes, appliance covers and ironing board pads. Provides structure without stiffness and can be quilted for durability; ensure it does not contact a direct heat source. Designed for accurate setup and repeatable results; ideal for classes, guild kits and retail demo bars.