Purchased these to complement some Lee Cooper work trousers...they were extremely difficult/tight to locate to the top of the knee pad part of the trouser..but even though tight to fit they eventually worked to the bottom of the trouser opening...I trimmed them slightly to aid locating which helped but still ended up poking out the trouser opening within minutes..it could have been the work trousers opening for the pad itself ?? Very disappointed, now in the refuse bin as not fit for purpose.