Leki say - With the Shark version of the Ultra Trail Breeze you are well equipped for your next ultra trail. The Shark System allows you to click directly into the Leki pole and therefore has perfect power transmission between hand and pole. Flexible soft span on the outer hand ensures a pleasantly cool feel. The hand is also well ventilated thanks to perforated materials on the palm and between the fingers. Both the fingertips and the palm have been reinforced with silicone, which ensures good grip on the pole itself and when it comes into contact with rocks.