Takes wine from good, to better, to best! Pour through the filtering screen into the inner bowl of the aerator. Sediment and cork are removed; wine streams through 8 breathing holes and aerates a first time. Good. Wine then splays against the outer bowl of the aerator and travels down the stem, streaming out of 4 more breathing holes and aerating a second time. Better. After flowing down the sides of the decanter, wine spreads out and rests at the wide base, aerating yet a third time and reaching its maximum flavor and aroma. Best. Also makes for a dramatic presentation! Screen is stainless steel. Machine made decanter and double-wall glass aerator are lead-free. Recommended to hand wash.