Cords

Slings 

• Shorter slings (12 in. or less): Sometimes used for tying off pitons 
• Single-length slings (24 in.): Good for alpine quickdraws
• Double-length slings (48 in.): Use to reduce rope drag, extend protection, built two-point anchors or as alpine quickdraws 
• Extra-long slings (72-96 in.): Great for looping large rocks and building three-point anchors

Webbing  

• Tubular webbing is standard for climbing
• Modular webbing is used for lashing gear and backpack straps

Climbing cord  

• Available in diameters from 1mm up to 9mm
• Thicker cord is stronger and more load bearing but also heavier

Materials 

• Nylon and Perlon: Affordable, strong, hold knots well, good stretch and high melting temperatures to handle dynamic falls
• Dyneema, Dynex and Spectra: Excellent strength-to-weight ratio, ultralight and highly UV resistant