LEKI Cristallo Trekking Poles AERGON Soft grips ergonomic design specifically created for trekking; Vented rubber and plastic construction for comfort~ breathability~ and durability; ergonomic design for control and support. Edgeless outer shape offers a variety of comfortable~ secure gripping options. Biotec 2 lightweight shell cavity. Automatic comfort straps: adjust without the use of a buckle for convenience. Lined with a soft~ quick drying wicking material for comfort. Locking Security Strap (LSS): feature allows wrist strap to quickly release when pulled upwards. SPEEDLOCK: (on both sections) 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 a fiberglass reinforced polyamid. It can be opened and shut easily with one hand~ even when wearing gloves. Ultrasonic Finish: high polished and matte Eloxal Lacquering covers the graphics to help avoid scratching.