Most silicone trivet mats are made of silicone. Listings commonly specify 100% silicone or food-grade, BPA-free silicone.
Silicone trivet mats commonly serve as heat-protective trivets and pot holders, coasters and spoon rests, drying mats, and jar openers.
Thickness varies by model. Examples in listings range from about 0.10 inches up to 0.67 inches, with some thinner/flat options around 0.23–0.25 inches.
Ribbed designs and raised feet channel water and promote airflow, which speeds drying. Those same features also protect the sink and dishware from scratches while supporting plates and utensils.
Many silicone mats are flexible and can roll up for drawer storage. Some drying mats include a hole or hanging feature for easy wall or hook storage.
Listings commonly describe non-slip surfaces with textured nubs or hex patterns. These textures help keep dishes from sliding and can aid heat dispersion.