The Black Diamond Aider is a lightweight five-step webbing ladder designed for mostly-free routes where you occasionally need an aider. (Lighter version of the Etrier.) With a lightweight and reinforced design, the Black Diamond Aider is for in-a-day big wall missions, speed attempts, and alpine climbs where low weight is essential.
Weight : 120 g (4.2 oz)
Strength : 6 kN (1349 lbf)
Reinforced five-step design
16 mm (5/8 in) nylon webbing is very compact
Designed for free routes with a few moves of aid