Set sizes vary. Trivets are sometimes sold in multi-packs (for example, 6-piece sets). Silicone baking mats most commonly come as two half-sheet mats or as three-piece sets that include two half-sheet mats plus a quarter-sheet mat.
Common non-slip backings include 100% latex and 100% PVC (polyvinyl chloride). Product descriptions for floor and sink-style kitchen mats typically call out a “non-slip backing” to indicate they will stay in place.
Silicone baking mats are sized to match common sheet pan dimensions. Half-sheet mats measure about 11-5/8 × 16-1/2 inches (labeled to fit half-sheet pans), and some sets also include quarter-sheet mats of about 8-1/2 × 11-1/2 inches.
The primary materials shown are cotton (for cotton-rope trivets) and silicone (for round silicone trivets).
Pan mats and trivets protect countertops from hot dishes and can double as pot holders or jar openers. Silicone baking mats act as reusable non-stick oven liners that replace butter, oils, sprays, parchment, or foil; they’re also useful for rolling dough and catching spills.
Trivets most often appear as small round mats; baking mats are typically rectangular to fit half-sheet and quarter-sheet pans.