The digital camo Travel Coat Lens Cover for Canon 500mm f/4 IS II Lens from LensCoat is a 3.0mm thick shock-absorbing closed-cell neoprene lens cover that is custom tailored to fit the lens without its lens hood. It is designed to fully protect the lens from bumps, scratches and abrasions when not in use, without the need of a more traditional bulky lens case. The trim fit of the coat permits you to have extra storage space when you're packing for that long photo excursion - or even a day trip. The coat simply slides over the lens, and closes with a secure touch fastener. The digital camo TravelCoat is an excellent cover when you're in the forest and need to disguise the lens from wildlife. Use with the appropriate optional Hoodie for complete lens protection.