This describes a very popular and functional set of kitchen bowls. These are typically a nesting set of mixing bowls designed for food prep, baking, and storage.1

Here is a breakdown of the common features based on the description:

FeatureDescriptionMaterialStainless Steel (Durable, rust-resistant, and lightweight compared to glass.)Quantity7 Bowls with Lids (The "7 Colors" typically refers to seven different sizes, with the exterior color-coding them for easy identification.)FunctionalityMixing, Egg Mixer, Salad Bowls, and Food Storage (Versatile for whisking, tossing salads, dough prep, and general food storage.)Lid TypeUsually made of food-grade plastic (PP) or silicone, often designed to be Airtight for food storage in the refrigerator.Non-Slip FeatureSilicone Bottom / Base (A rubber or silicone ring on the bottom of the bowl to prevent slipping and sliding on the countertop while mixing or whisking.)DesignNesting/Stackable (The bowls fit neatly inside one another for compact storage.)InteriorOften features a polished, mirror-finish interior for easy cleaning, and some sets include measurement lines etched on the inside.CareThe stainless steel bowls are generally dishwasher safe, but the lids are often hand-wash recommended to preserve the seal.

This type of set is ideal for home cooks who need multiple sizes for different tasks, appreciate the stability of a non-slip base, and value the convenience of having lids for immediate food storage.