The Cressida is equipped with the Speedlock system for hassle free adjustment. Speedlock is just like the quick release mechanisms found on bicycles, it easy to use when the poles may be wet or icy & with gloves or mitts. For comfort the Cressida is fitted with soft to the touch, ergonomic Aergon grips. We only sell Leki poles in pairs because to get the maximum benefit and efficiency they should only be used as a pair.