Pyrex Smart Essentials Mixing Bowl Set Including Locking Lids (Clear), 8 piece Smart Essentials 8-pc Mixing Bowl Set includes one each: 1-qt, 1.5-qt, 2.5-qt & 4-qt glass mixing bowls with green, orange, blue & red plastic covers Pyrex glass is safe in the oven, microwave, refrigerator, freezer and dishwasher Pyrex glass is non-porous, so it won't absorb food odors, food flavors or food stains Clear glass allows you to watch your food as it cooks Limited 2-Year Warranty on Pyrex glassware and 1-Limited Warranty on covers and accessories