Soft Antishock System Here is "Old Faithful" the cornerstone of LEKI history. These heat treated 7075 Aluminum poles have been on the LEKI line-up for 10 years. With COR-TEC Grips that develop a patina over time (like your favorite cork soled sandals) they also feature comfy Straps and the 360° turn back security of the Super Lock System (SLS) that was proven to be the strongest by TUV an independent testing lab. Carbide Flextips are added security on rock and ice.