Four Manhole Cover Coasters from the Kingdom of Morocco! The set includes Casablanca, Marrakesh, Rabat and Tangier Reach out for wholesale pricing on the trivet versions. What is a trivet? Glad you asked! It’s a heat-resistant platform that protects the surface of a table from scorching from those hot dishes. Cork is a perfect natural material for this use and in this case, it serves multiple purposes: an ice breaker about travel, visual resonance through beautiful illustration, and protection of the table surface. All of this adds up to functional art. Dimension: a bit larger than the diameter of a 45rpm record.