If assembled with the locations of the predrilled holes, the racks do not mate up to the channels on my roof. Awesome. Once on, they are only slightly uncomfortable. Sits in your ear comfy and also comes with different sizes to fit for your ear. Another 5* rating to add to the list. They give you great height and would be extremely comfortable IF I didn?t have such flat feet. I get so many compliments on this case protector! and still less expensive than their leading competitors. I actually ordered the wrong one, it was my fault for not paying attention but seems like it would be a good buy for the pro AirPods. Enter - Proof Labs memory foam.