This SOLO TLB316-0004 black polystyrene domed drink lid fits onto a SOLO SSP, Duo Shield insulated, Bare Eco-Forward PCF, or Bare Eco-Forward SSPLA paper hot cup with 3.5" top dia. (sold separately) to help prevent spills of hot liquids during transport. The domed shape provides space for foam or whipped cream. The lid has a sip hole and an inner ring that creates a secure fit with the cup to prevent dribbles at the seam. The lid is black and is made of polystyrene for strength and resistance to shattering. Overall dimensions are 3.7 x 0.7 inches (diameter x height).Disposable food service products are used to store, insulate, transport, prepare, and serve food and drink. They may be made of paper, plastics, or metal foil. Food service products for freezing items protect their contents from freezer burn, contamination, and drying.SOLO manufactures disposable plastic, paper, foam, and post-consumer recycled content cups, plates, and other products for food and beverage service. The company, founded in 1936, is headquartered in Lake Forest, IL.