Joie's Stretchable Silicone Seals fit securely over most round bowls, plates, cans, and jars to seal in freshness for a liquid-tight, airtight fit Made from stretchable silicone; heat safe to 400-degrees Fahrenheit; set of 3 includes 1 each 6.33 x 8.66 x 11.40-inches Simply slip over the opening of round containers; flexible and foldable for easy compact storage Also works great as jar openers; replaces the use of plastic wraps and aluminum foils for less waste Won't burn, melt, or scratch; naturally nonstick and dishwasher safe for easy cleanup