Headstrap And Nose Foam For UK Cambridge Mask Face Basic N95Our optional head strap and nose foam accessory pack is designed to help improve mask fit. All our newer PRO mask have this as a free extra, but it is not included in BASIC mask packaging. Whats Inside the Pack The head strap clips to each ear loop then goes around the back of the head, reducing strain on the ears and tightening the mask on the nose and chin. The nose foam can be stuck inside the nose section of your mask to increase comfort and