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.
It fits the rift s perfectly. Great for when you get sweaty and don’t want to ruin the original soft foam. I use this everyday and if it gets sweaty I just rinse it and give it a shake to dry. Great product.