Black Diamond Equipment says:
The world's strongest, most reliable single-point suspension sleeping system, the Black Diamond Single Portaledge is a stable, comfortable ledge for soloists and parties of three. Made from strong-yet-lightweight anodized aluminum and durable 210d nylon double ripstop, the Single Portaledge is easy to set up and features four pull straps and a six-point buckle system for quick and easy adjustments.
Current Retail: $649.95-$699.95
Historic Range: $389.93-$699.95