Super Makalu Ergometric Long AS Super Makalu Ergometric Long (SAS) Soft Antishock System These beefy heat treated all Aluminum 7075 poles provide a comfortable long textured foam extension below the Ergometric Grips and comfy Straps. Need to make a quick ascent and don’t want to adjust your poles? Just choke up on the foam extension for the extra push you need. The 360° turn back security of the Super Lock System (SLS) was proven to be the strongest by TUV, an independent testing lab. Don’t forget the Soft Antishock System (SAS) for those long descents! Carbide Flextips are added security on rock and ice. Real Customer Quote: “About halfway down the Kaibab Trail, my husband’s knee totally gave out. He didn’t think he could make it to the river so I begrudgingly relinquished my poles. He was able to make it to Bright Angel Camp thanks to my Makalu’s!”