Twist-lock trekking poles have a nasty habit of jamming. The slippery shaft of the pole can make it difficult to get a firm grip to unlock them, especially if they are wet. Here’s an easy way to overcome that problem.
Cut two rectangles from some rug anti-slip underlay (available from places like Dunelm) or from a car boot anti-slip mat (from places like Halfords). In the picture, the rug underlay is white, the boot anti slip mat is grey. Wrap one piece around each section and twist. They give a far better grip than using bare hands. Weight? Rug underlay 2g, boot mat 7g. The rug underlay is now in my repair kit. Of course, you could use flick lock poles, but they are heavier.