Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
Does the job but too uncomfortable for sleeping. It arrived covered in hair and gunk so pretty sure they sent a used pair. Didn't get a response to my complaint - but, they are simply to clean and disinfect so I can still use them - just a gross experience to open.
Very comfortable to wear them. The middle spine is a bit stiff, caused a bit discomfort in ears if you sleep on your side, but once you get used to them, they work great. A necessity for people living in high density complex.