To answer your first question, yes, it really does work. You can make your own healthy chips, righteously-crispy chips, without fat, in just 3-5 minutes in your microwave. Potatoes, sweet potatoes, carrots, parsnips; any kind of root vegetable works beautifully, as do fruits such as apples, pears and mangoes. Chips come light and crispy, and you can experiment with added herbs or special salts to create chips like you've never tasted before. We've tried it out and the results were wonderful. The secret is to slice vegetables or fruit as thin as possible; a mandoline or a food processor is the easiest way to get uniform slices. The set includes two 11"-diameter trays made of heat-proof, dishwasher silicone.