An interesting Vietnam era “Cap, CVC, Insulating, Special Purpose” the cap is outwardly in nice clean condition and all velcro is good. The inside is again but does show wear and dirt to the labels from use, it needs a brush down as has ancient dried grass etc inside. The labels show a date of 1962 in the code. These were for wear with or without the M1 helmet. it is a good size 7 ½ .