100% LEAK-PROOF: The soft, flexible silicone lids seal incredibly well and are easily opened and closed! You can even throw these in your lunch bag without having to worry about any leaks..BPA-FREE: These cups do not have any plastic content whatsoever and are made of glass for easy heating and durability. The lids are made of high quality and food grade silicone that is completely free of BPA, non-toxic, has no chemical odor and still provides a very soft silicone feel as well as a nice fit on the cups..OVEN,MICROWAVE,DISHWASHER & FREEZER SAFE: These salad dressing cups are easily cleaned by hand or in the dishwasher. They’re also safe to be kept in the refrigerator. Thanks to the air tight seal, your food stays fresh longer than other storage containers..COMPACT & PORTION CONTROL: Each one measures 2.48" x 1.2", excellent for your lunch boxes. Perfectly control all portions of your salsa, hummus, ranch dressing, vegetable dips, nuts, raisins, small chopped toppings and more. Wide usage in the kitchen, school, office, during travel, on the beach etc..SUPERB GIFT FOR MEAL PREPPERS: The colorful silicone lids along with the mini cups are very charming and greatly assists in portion controlling your sauces or nuts. Perfect for meal preppers and condiment connoisseurs..BETTER THAN PLASTIC: Eco-friendly, reusable, no plastic smell and doesn’t contain anything harmful that are normally present in plastic..100% SATISFATORY SERVICE: The package of this glass sauce container set has cardboard intervals to prevent damage during transportation. If the glass sauce container set you received is damaged or imperfect, or you are not 100% satisfied, please contact us directly and we will provide a satisfactory solution.