My sister recommended this to me years ago for mixing mashed potatoes. I was skeptical until I got one of my own. The lid comes in two parts. The outer part of the lid sits on the bowl and forms a protective barrier from splatter. If you want to mix cake batter, mashed potatoes, or anything else for that matter with a hand mixer, you can stick the beaters down into the center of the bowl and the outer seal keeps all the splatter from coming out and making a mess. If you are finished mixing and want to put the food in the refrigerator, just put the center part of the seal on and you are ready to go. It is great for mixing things in and not making a mess. I also like to use mine to hold cookies because the lid is very easy to get off and my children don't need my help getting it off or putting it back on. The handle makes it even better so you can get a good grip on the bowl while mixing or transporting. I would highly recommend this if you still use a hand mixer to help cut down on splatter.