This glass meal prep container set comes in gray color and is made of borosilicate glass, with a 1.9 lbs. (30 oz.) capacity. The package includes 10 complete sets, consisting of 10 containers and 10 lids. It is suitable for meal prepping, storing leftovers and snacks, as well as for use in gym, office lunches, travel, picnics and other occasions. The containers are made of premium borosilicate glass, which is stronger than ordinary glass food storage containers and can go straight from the refrigerator to the microwave or oven to the table. They are easy to clean without absorbing stains or smells, allowing repeated use. The glass storage containers are food grade, convenient to use and easy to take care of, being suitable for use in the microwave, freezer, dishwasher and oven. The plastic lids should be taken off before placing in the dishwasher, oven and microwave for better maintenance; the lids can be washed on the top rack of the dishwasher or by hand. The set is equipped with snap lock plastic lids that come with silicone seals, ensuring meal prep food lasts longer than normal plastic food storage containers and preventing food from spilling. These lids are easy to open and shut, stop leaking and will not easily break off. With a 30oz capacity, the meal prep containers provide space for portioned meals, allowing control over serving sizes.