Pressdome - Universal Vacuum Air Tight Food Sealer Containers - Professional (Jumbo and Junior) with Plate Keeps meals warm up to 1 hour. Seals Leftovers directly on plates. Prepares meals on plates in advance for the week, stack & store. Leak-proof, easy transport to potlucks & picnics. Strong vacuum marinates up to x faster. Keeps food fresh up to 3x longer.