These placemats are weaved out of PVC fiber| so they are NOT water tight and NOT totally spill proof mat. Heat resistant and durable; Highest heat-resisting temperature can amount to 150F that is 65| please DO NOT use it exceed the temperature. Washable; Easy to clean. Stains just wash off and it dries very quickly. Material; 70% PVC 30% Polyester|Set of 4 Placemats| Each measures 12X18|DURABLE AND SUSTAINABLE - Reusable| Scratch Resistant and can be used indoors and outdoors