The Panasonic RP-HC100 is a full-size noise-canceling headset that completely covers your ears yet folds to about half its normal size when not in use. Our test unit lacked competitors' transparency and extended high end, and it provided the least effective noise cancellation. But the differences were subtle, and the headset still managed to eliminate most midrange and low-frequency noise. And the RP-HC100 is certainly competitive at the price.