The LEKI Spin Speedlock Nordic Walking Staff offers full performance and stability, in an all Aluminum Walking Pole (HTS 5.5 Series heat-treated ultra sonic finished Aluminum). The 2-section poles adjust from 110-130cm (43″-51″) and allow you to quickly and easily customize your length to share with anyone of any height. Unique “Trigger” system provides unequalled support and power transfer with a strap that completely wraps and supports the hand and wrist. They easily release from the grip without having to take hand out of the strap for convenience (removing clothing layers, tying shoes, reaching for water bottle). The SPEEDLOCK 2 is Leki’s latest generation of external locking systems. It is 1/3 smaller, 1/4 lighter, and has a 20% stronger locking force than Leki’s original Speedlock. This system utilizes direct compression force to lock the pole shafts into place. Touted as the most powerful external locking system in the world, the SpeedLock 2 utilizes an integrated stainless steel pressure plate that provides a vise-like clamp to hold the pole adjustment in place. The cam style lock is made of fiberglass reinforced polyamid. It can be opened and shut easily with one hand, even when wearing gloves!Specially design rubber fitness tips offer traction on pavement and smooth surfaces. Carbide flextips are replaceable and offer secure traction when walking off-road. Color: Black, Grey and Silver. Pack Length: 39.5″. Weight: 16.3 oz.(462 grams) /pair. Import.Burn 40% more calories than regular walking without poles.Pump up your cardio by increasing oxygen consumption.Great workout without perceived exertion.