BungyPump Walkathlon, 2-in-1 Fitness Walking Pole, 8.8 lbs & 13.2 lbs Built-in Resistance/Fixed Pole Hiking Trekking BungyPump Walkathlon has TWO functions in one, use the built-in resistance of 8.8 lbs. or with the help of the locking mechanism transform it into a fixed pole; Use one pole for both training and hiking The built-in resistance gives the user effective yet gentle fitness and strength training, while the fixed option is perfect for hikes in mountains, rugged terrains or as support on slipper surfaces Increases calorie consumption with up to 77%, compared to regular walking; Activates and strengthens about 90% of the body's muscles Can easily and without any tools be upgraded to higher resistance levels; When travelling, they can easily and without the use of any tools be disassembled into 3 parts, becoming only 27 inches in length Adjustable length 45-61 inches, moveable locking system to alter between springy and fixed pole, can be used by the whole family, cork handle with ergonomically designed wrist strap