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 analyses reviews to verify trustworthiness.
This mouthguard should be worn if you want your teeth to be broken! It's hard as a rock before and after use and can be used as a SHANK It's too hard! It's way too uncomfortable to use and I wouldn't even recommend this to my worst enemies!