Joseph Joseph Lotus™ Non-scratch. Made from high-quality polypropylene, the unit has self-adjusting sides to fit most pans, heat-resistant silicone feet and an innovative silicone finger guard. It has a large capacity when fully open, but folds neatly away for storage. The unit is non-scratch and suitable for use with both steel pans and non-stick cookware. Polypropylene parts heat-resistant up to 110ºC/230ºF; silicone parts up to 270ºC/520ºF. Dishwasher safe.