The only issue that I have is that it is too easy to lose the flip lock. I tried my best to keep them tightened, but I lost them both. Now, I have to pay to get new ones. I am probably going to put something around the pole to be sure that I don't lose them again. I have used these poles for months now, including two months traveling with two of the weeks doing a lot of walking tours. I was having wrist pain using regular hiking poles. The thumb grip and palm cradle on these poles really helped. Also, the poles collapse down to a size that fits my newer checked luggage (smaller than my old luggage). I have the older version that does not have push buttons to connect the pieces. They have connector inserts that have worked well for me because it made it so easy to take apart and put together quickly which was important when traveling by train. I hope they last a long time.