The first ecological paper coffee lid in the world 1 Comparing with plastic lid, paper lid does not scald your tongue 2 Precision manufacturing ensures that the seal between paper lid and the cup is always tight，no water leakage 3 Paper lid Performs much better than plastic on standard industry drop-tests. 4 With a transparent window, easily to see what's in the cup. 5 Strawless，printable and stackable, save the space.