These sticks did the trick
Despite getting the wrong size these poles worked perfectly for my first ultra trail race. The race had over 11,000' of climbing and the poles helped me finish.
They are light and very compact when folded. My race vest had no place to store them when they were folded so I carried them on the flats and hardly noticed them.
I initially ordered the correct size, but failed to fully extend them and thought they were shorter than advertised. Consequently I returned them and ordered a pair that turned out to be a bit long. They still worked so I didn't sweat it. Let my fail be your win, make sure you extend them until the button clicks :)