Food Vacuum Seal Cover Description These stretch and seal lids are proper for food storage trays because of the high-grade film, it’s easy to form a vacuum seal, so don’t waste your food anymore. In addition, the Cup covers reusable are also GOSPEL of microwave using: the stretchable film can easily bear the heat of microwave so you don’t have to worry about SPLATTER. Food saver vacuum cover Features Instant. The vacuum lids lock-in and keep freshness up to 5X in a matter of seconds just by pressing down on various container edges. Reusable. On