Most BMW riding pants feature adjustable positioning of the knee armor. The armor pockets have velcro strips across the bottom and top, allowing the armor itself to be positioned up/down over a range of about 2 inches.
A few days ago I changed two pants so that the armor is in the lowest position. This happens to work out very comfortably and protectively when my knees are bent in a normal riding position but puts the armor slightly below my kneecap when standing. So, if my legs are straight there's little armor protecting my knees, but who crashes in a standing position? I've never seen a recommendation for positioning knee armor. Should I leave it low, or should I position it higher?