This Lens Cover for the Nikon 400mm F3.5 AIS in digital camo from LensCoat offers your valuable equipment protection from minor scrapes and bumps, preserving its resale value. It also helps break up the shape of your lens, making it less noticeable to wildlife. This cover includes a separate piece for when the lens hood is extended which can be quickly and easily put on and removed with its hook-and-loop attachment.