I ride a lot of XC in rocky NH ( the granite state!) and wnated something to protect me on some really technical rocky stuff after a skiing injury left spme big scars on my knees. After the break in period, they are soft and confortable enough to wear for a few hour XC/trail ride even in the summer. Once in a while the velcro strap will catch on something and come loose, but the pads do stay in place well. If you are willing to invest the time to break them in, you will be rewarded with a light knee pad that could save your keens from some rock damage!