Presto 04830 PowerPop Microwave Multi Popper PowerBase and PowerCup concentrators combine to focus microwave energy so that virtually every kernel pops Pops up to three quarts in as little as 2-1/2 minutes with or without oil Fits in most microwaves, even compact models with cavity sizes 6-1/2"H x 10"W Easy to clean, bowl and lid are fully immersible and dishwasher safe