I didn't know what I was missing until I tried this straw topper. I originally bought to use while I was recovering from jaw surgery, but I use it all of the time now.
Worked for the purpose of not pursing my lips to drink from the straw, but the glossy bear logo on the topper got oddly sticky after hand washing with regular Dawn dish soap. I have tried to wash it again multiple times but it is still sticky when it dries. Perhaps the set I received was manufactured with defective materials?