rappelling

and the chest is an elastic chest strap

you can move on freely by adjust the rope

Max load:330 lb(150 kg)

otherwise it will cause the ascender to slide downward

NewDoar Professional CE Certified 30kN-6744lbs Climbing Carabiner-Screwgate/Blue Climbing Gear rappelling[CE Certified]: These Carabiner are made from7075 aviation aluminum material, which is super strong and portable. EN 362: 2004, EN 12275: 2013, UIAA121: 2018,QUALITY GUARANTEED! keep you safe and can stand 30KN (about 6744lbs) pull force and up. [CE Certified]: These Carabiner are made from7075 aviation aluminum material, which is super strong and portable. EN 362: 2004, EN 12275: 2013, UIAA121: 2018,QUALITY GUARANTEED! keep you safe and can stand