Ahh, the diner coffee mug. Thick walled and narrow in the middle, they're the insulated coffee mugs with a welcome smile, and open heart any time of day or night.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
