Our glass storage jars are made of food grade borosilicate glass, BPA-free, hard and safe. Note: Our glass jars can be washed in the dishwasher or put in the refrigerator. We recommend removing the wooden lid before using it in the dishwasher and washing it by hand. You can easily scoop up rice, flour, and sugar without spilling even when you pour the food. You can even reach into the bottom of a glass flour jar to clean it by hand.Not only for kitchen storage, but even for pet food or other household items such as laundry beads, bathroom cotton balls, etc.Food storage tanks are suitable for storing various ingredients, snacks or other foods such as biscuits, tea, sweets, coffee beans, dried fruits, nuts and spices. Contents: 4 storage jars with Black Lable. Size: Capacity is 41oz/1200ml and dimensions are 10x10x15.8cm. Also included are oil and water resistant labels.