This Lens Cover for the Sigma 150-500mm f/5.6-6.3 DG OS HSM APO in forest green camo from LensCoat is a 100% closed-cell neoprene coat that protects the lens from bumps and scratches. It is ideal for nature and outdoor photographers, sports shooters, and photojournalists. It also provides a thermal barrier, protecting your hands from cold lenses in lower temperatures and is waterproof, protecting your lens in wet, inclement conditions. It features a clear plastic window through which you can see the autofocus controls and distance scale. Another benefit of this cover is that it helps disguise the shape of the lens, making it less visible to wildlife.
Note:
This cover cannot cover the fixed portion of the lens barrel due to the manner in which the lens barrel extends and retracts, leaving approximately 2.0" exposed when the lens is fully extended