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.
You don't know how good these things are until you run out and have to use the supermarket filters. These are by far the best filters I have used, not only in my V60, but in my collapsible camping filter as well. They make coffees quickly and consistently, without leaving the papery taste that the bleached supermarket filters I purchased leave.
We use these coffee filters every day in the Hario V60 to make filter coffee. If you haven't tried filter coffee you are missing out. These official Hario branded filters work best in compared to alternatives. These leave no papery taste and have the perfect flow rate.