They’re commonly made from borosilicate glass, food‑grade silicone, aluminum, and high‑heat plastics (often sold as BPA‑free or melamine‑free).
Warranties vary by product. Common examples include 1‑year limited warranties and some models offering 5‑year limited warranties. Check the specific product listing for exact warranty length and coverage.
Collapsible silicone bowls fold down substantially for storage. For example, one model lists an open size of about 8" diameter × 5.625" high and a collapsed size of about 9.5" diameter × 2.35" high, making them easy to store in cabinets.
