Tupperware | VENT 'N SERVE™ - HEAT 'N SERVE™ ROCK 'N SERVE® ... Healthy homemade meals are just microwave minutes away Amazon.com: Tupperware Rock'N Serve 6-Piece Set, Gemstone: Kitchen ... - Set of 6 freezer- and microwave-safe containers; Virtually unbreakable plastic with textured bottoms and feet; Each lid features rocker vent to allow steam to escape during microwaving