Lightcompact reversible double layer of polycotton in a choice of 4 patterns on one side and waterproof olive nylon on the other all the covers have a velcro strap adjustment at the lens hood if the lens cover is a bit long it can be bunched up or adjusted with velcro velcro tabs join the cover under the lens the covers are designed to be a loose fit so that you can get your hands between tabs to make any adjustment to the controls