doonmi- 3 pack premium glass measuring cup with blue lid(1 cup, 2 cup, 4 cup), microwave, oven, freezer safe, perfect for cooking, baking. doonmi doomin's glass measure cup set are made from high quality borosilicate glass, which can be used for storage, cooking and microwaving. (1)multi-purpose: easy to read measure indicator and comfort grip handle, great to use as bakeware and prepware. (2)perfect size 1 cup (250ml/8oz) 2 cup (500ml/16oz) 4 cup (1000ml/32oz) (3) safety choice microwave, dishwasher, preheated oven, and freezer safe; lids are bpa free, and top rack dishwasher, and microwave safe. working temperature: withstand from -5°f – 700°f (-20°c – 400°c).