Flexsil-Lid™ by Wrapmaster is a range of food-grade silicone lids that fit most international sizes of gastronorm trays and steam pans, including stainless steel, plastic, polycarbonate, melamine and ceramic used in professional kitchens. A reusable, time-saving option for day-to-day preparation in professional kitchens. The National Sanitation Foundation certified food-grade silicone lids have a unique, patented, lip-lock design that lock in freshness and reduce food waste with an airtight seal. Highly flexible, durable and reusable multiple times, these lids have multiple uses when used with gastronorm containers, including cooking in the oven or microwave up to up to 220℃ / 428℉, freezing to -40℃ / -40℉ and when used for storage in cold stores or fridges. In addition, these are fully transportable and stackable - perfect for any catering environment.