These are not your typical mixing bowls. Trudeau's Set of Three Mixing Bowls have non-skid, non-scratch bases that are designed for angle use. Each bowl will sit flat on the counter, but when you need to beat or stir ingredients, you can simply lean bowl forward and it'll sit at an angle. Made of durable, long lasting, microwave and dishwasher safe polypropylene. Set includes 2, 3 and 4-quart sizes. Black granite look. 5 year warranty. By Trudeau a company that develops visionary products. Add an exciting flavor to your day, with Trudeau. Style eloquence, innovation Trudeau letting you savor life's little moments.