Beal Dynaloop 120cm Blue. Made from 8.3mm rope. Apart from the fact that it is dynamic the rope has another advantage over webbing: the rope's core is protected from UV and abrasion by the sheath. Specifications for Beal Dynamic Slings: Manufacturer: Beal Length: 12 cm Color: Yellow Package Contents: Beal Dynamic Slings The Beal Dynamic Slings is a quality addition to the Beal lineup. For more great deals on Runners & Slings by Beal please browse our Beal Climb page.