I have buy hundred of amazon product and this be my first negative review . after about a week of use one of the side no longer adjust , there be a button you push to release it -lrb- so you can adjust the width of the holder -rrb- and after hit that the left side will no longer catch at any tighter position . I personally consider the review for most of the product I have buy on amazon , which be why i be fill this out .