Cross-cut slot simplifies straw insertion. Cup-hugging lip ensures a tight, secure fit. Slightly raised rim allows you to stably stack one cup upon another. Fits: 7oz PETE Cold Cups; Material(s): PETE; Color(s): Clear; For Use With: SOLO? Cup 7oz Ultra Clear? PETE Cups; SOLO? Cup 9oz Tall Ultra Clear? PETE Cups; SOLO? Cup 7oz Galaxy? Translucent Plastic Cups; SOLO? Cup Party Plastic Cups.