Karat Hot Cup Lids are compatible with Karat Hot Cups. Durable polypropylene, heat-resistant hot cup lids. Made of high-quality material and are recyclable as well. Lids are much more heat resistant than PS lids. Sipper Cup LidFits hot cups with 80 mm rim diameter. Fits: 8 oz Paper Hot Cups; Material(s): Polypropylene; Color(s): White; Color Family: White.