I got these poles in the spring for backpacking. I have 90 miles on trail with them on some very steep and rocky terrain. The locks have been solid, as I've not experienced any collapsing when putting most of my body weight on them during steep declines. Incredibly light and comfortable. Cons, they are two section poles so when collapsed when not in use they are quite long compared to a three section pole. Overall I am very impressed with these hiking poles.