My friend also had the problem of a worn, defective handle extension after intensive use of his telescopic poles. Some parts of the pole had already been replaced by the manufacturer over the years. However, he was never satisfied with the original handle extensions. Research revealed that field hockey stick tape is often used for this purpose in North America. This gave me the idea of simply trying out the leftover handlebar tape from a road bike in our basement.
Bar tape is a common accessory in the world of road cycling. Available in a variety of colors and materials, it offers a good combination of grip, cushioning and durability. The tape is usually wrapped around the handlebars of a road bike to provide better comfort and grip - characteristics that translate perfectly to a ski pole.