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.
They are thin. They do not have handles (that's my bad for not reading the description more closely). I use more bags more often in order not too overload them and to leave room to tie the plastic closed.