Specifically designed for your Canon RF 100-400mm F5.6-8 IS USM lens. The Lens Oak protects your lens against bumps and scratches. It is made of Neoprene material: soft from the inside and water resistant on the outside. Easy to install and it keeps your lens as new. Available in 5 colours: Forest Camouflage, Green Camouflage, Brown Camouflage, Black and True Timber HTC Camouflage