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.
Been using these Jammers for about 2 months now and have had no issues. Speedo brand is pretty consistent in sizing and durability so definitely worth the price. I tried ordering the cheaper knock-off Jammer brands and found the sizing to be inconsistent or inaccurate. Speedo makes a good product!