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.
The blanket arrived within the expected dates, it’s a great size for two and is working brilliantly. My husband is a dreadful insomniac and he is finding that although he still wakes during the night he is actually going back to sleep after waking. This is amazing!