LEKI Micro Vario Ti Trekking Poles Locking Security Strap (LSS): feature allows wrist strap to quickly release when pulled upwards. Positive Angle Aergon Extended Grips are made from durable hollow plastic and feature a contoured closed cell extended foam grip. Automatic Security Straps: adjust without the use of a buckle for convenience and comfort easy length adjustment and secure hold. Very comfortable~ moisture-wicking and quick-drying. Ultrasonic Finish: high polished Lacquering covers the graphics to help avoid scratching. Push button and Speedlock system allows the pole length to be adjusted quickly and easily for a secure "hold". The Speedlock system (on upper section) utilizes direct compression force to lock the pole shafts into place. Touted as the most powerful external locking system in the world~ the SpeedLock 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.