Terracotta warmers are designed to be soaked at the base before heating. The retained moisture from the soaked base helps keep tortillas warm and moist while serving.
Sizes vary by model, but common dimensions are about 8.5–11 inches outer diameter and roughly 2.75–4.33 inches in height, depending on the warmer.
Available styles include plain white glazed and lead-free stoneware, colorful hand-painted designs, and natural or antique-looking stone finishes (for example, options with blue stripes).
Fit sizes vary by model. Examples from listings include: a warmer that fits tortillas up to about 7.5 inches wide; one with a top outer diameter of about 7-3/4" and an interior (ID) of about 6-1/4"; and another warmer around 11 inches in diameter noted as suitable for 10-inch tortillas.