For soup season and beyond, this project die will cut this popular shape quickly and easily for a finished creation in just minutes. This die will only work in a Go! Big Fabric Cutter or a Studio Fabric Cutter with the appropriate adaptor. Beginning sewists and crafters can feel confident that each cozy will turn out perfectly every time!Warning: All fabrics, thread and batting should be 100% cotton if cozy will be used in a microwave. Using material with other fibers can cause a fire in your microwave during use. Check labels carefully. There are specific brands of batting designed for this use also.