RCAF stores reference 22c/16, RAF stores reference 22c/67. Original grey coloured sponge rubber cushion inserts. These were fitted inside the earpieces of B-types and other flying helmets with zipped earpieces. They were intended to provide extra soundproofing and now have the additional benefit of improving the look of your helmet. A little dusty/grubby but in good, flexible condition. No markings. Why buy reproductions on ebay at £35 a pair when you can have original issue? Stock code H26869.