WhiteRhino Glass mixing bowls with lids are made of high borosilicate heat-resistant glass which can be directly used in microwave oven refrigerator and freezer(exclude the lids). These glass nesting bowls come in different size of 1.1qt 2.1qt 3.7qt so you can whisk egg or prep food with small bowl mix salad or bake a cake with medium bowl cured meat with large bowl. Our large glass mixing bowls can be neatly nested together to save space and facilitate sorting.Each bowl equips a lid which can keep food warm fresh and easily portable.Perfect for your kitchen use for mixing baking cooking prepping serving food storage.