A chilling combination of stainless steel and Acrylic. This high quality 18/8 stainless steel upper salad bowl nests inside thick acrylic lower bowl. Please cubed or crushed ice about 1/3 high in lower ice bowl and position the upper salad bowl into the lower bowl, pushing down so good contact is made with the Ice. Salad bowl can be spun on ice for special presentation. Acrylic dome lid keeps the cold air in and the bugs out. Upper salad bowl had a 4-Quart capacity. The lower bowl has a 6-quart capacity. Food stays cold for hours…. missing tongs