The glass mixings bowls are made of high borosilicate glass,thicker,safer&more durable for everyday use,lead- and cadmium-free.Smooth surface for easy cleaning. The thickened rim adds durability, provides a more secure grip when mixing,lifting,or pouring.Withstand extreme temperatures from -4°F to 1040°F, safe for oven, microwave, fridge, freezer and dishwasher. The glass bowls with lids are accompanied by an airtight silicone gasket and food-grade PP locking lid to keep in freshness and prevent spills,BPA-free, very safe and durable, you can use them for leftovers without odors and air getting in or out. Our salad bowls and lids are stackable and neatly nested inside each other, which take up very little space, make your kitchen well organized and tidy. These mixing bowls have 3 sizes including 4.5 qt., 2.7 qt., 1.1 qt. It can meet all your purposes in kitchen. Clear glass allows easy monitoring of contents. The wide-mouth design makes mixing and pouring effortless, Its deep bowl structure prevents spills and suits baking,meal prep, storage,and more kitchen tasks. while the smooth surface ensures quick cleanup. The sleek,transparent design adds a touch of elegance to any kitchen, blends seamlessly with any décor. Temperature changes or long-term storage can sometimes cause lids to lose their shape. Size: large. Color: Blue and Clear.