But it?s not a deal breaker to me. I gave it a 4 because it isnt a 5 but the story line was there. They come in a sealed plastic bag and the odor is strong at first, and I?m not even sensitive to that normally. They are the only slippers I wear - and I wear them everywhere. if you are not CAREFUL you?ll tear up other pieces like the rubber that is attached to headband, the hinge pins MAY fallout (they are super tiny) and Even the hinge it?s self. Out of the package it has NO really weird silicone/plasticy smelly. These are a game changer for running with AirPod pros. Another thing to be cognizant of is that these isolate ambient sounds very well. Ich bin ein Freund der In-Ear Produkte von Sennheiser. If I tried to stuff myself in that elastic band Id feel like a sausage even though it has some stretch.