5 stainless steel mixing bowls with airtight lid Our mixing bowls and lids are made of stainless steel and BPA-FREE plastic. You don't need to worry about whether such a bowl will affect the beauty of the kitchen. The inside of the mixing bowls are made of a smooth mirror, the outside of the mixing bowls are made of anti-fingerprint matte. The base is designed with non-slip silicone. The most important point is that our bowls can be nested without worrying about whether it will take up your kitchen space. Buy a set that only occupy one bowl of space. Stainless Steel+ Airtight Lid What most people love about the 5pcs Mixing Bowl Set are its stainless steel material and airtight lids. We know you're going to use these bowls for storing your snacks or ingredients. So we made sure these bowls are designed with tight lids to prevent possible leaks or spills. Measurement Marks We know you're going to use these bowls to mix your ingredients. Whether you're baking a cake or preparing a delicious meal, these mixing bowls are perfect. We've added markings so you can easily look at the ingredient measurements as you mix, whip, or whisk. Silicone Base Non-slip silicone bottom prevent your bowls slip down from table. The silicone even wraps around and covers the sides of the bowls at the bottom, allowing you to tilt the bowl as you mix and it will still stay in place. With a more solid, slip-resistant base, you can be confident in mixing, whisking, or whipping on every kind of smooth surface!