Product description 1.FOOD-GRADE MATERIAL - Our dipping sauce containers are made of high quality 18/8 Stainless Steel, 100% food-grade silicone without BPA, non-toxic, no chemical odor. Reusable stainless steel condiment containers replace the disposable. A perfect environmental solution to reduce the waste left behind by single-use items. 2.100% LEAKP-ROOF - The design provides an airtight and secure seal to lock in freshness. Dont worry they will stain your bag. Its a mess-free, spill-free food storage solution for your kitchen. 3.WIDELY USED - These stainless steel condiment containers are suitable for dipping sauce and or others small things. Such as, sauces, baby food, fruit bits, cream cheese, sunflower seeds, dried cranberries, nuts. 4.EASY TO OPEN & CLOSE - As the silicone lids are soft, your kids can easy to open these. And please dont worry if you overfill the containers, the are stretchy enough Dishwasher safe and easy to clean. Also freezer and oven safe.