Most Pyrex sets use glass for the container bodies and plastic for the lids; some listings describe the glass as tempered or premium glass.
Listings cover a wide range of capacities. Common cup sizes include 1 cup, 2 cup, 3 cup (24 oz), 4 cup, 3.2 cup, 4.7 cup, 6 cup, 7 cup and up to 8 cup. Ounce examples listed include 16 oz, 24 oz, 25.6 oz and 37.6 oz.
Some lids are described as airtight and leak‑proof with locking tabs to seal food, while other lids include vents or vented latches that let steam escape during microwaving.
Warranty terms vary across listings; examples include a 2 Year Limited Warranty and a 1 Year Limited Warranty.
Set sizes vary; examples in listings range from small 2‑piece sets up to 10‑piece sets, so common counts fall within that span.