Dynatec 8mm These thin 8mm Dynatec slings are just as strong as their thicker variants. They can be used for narrow thread protection and to generally reduce weight. Black Dynatec slings are not commonly available because it doesn't take dyes well, but this webbing uses fibers which are individually coated to produce dark webbing with a durable colour. Dynatec slings have more or less replaced Nylon slings. due to them having a higher strength to weight ratio, smaller pack size, less water absorption (important in winter) and a higher resistance to cutting.