The one in the photos is representative of the ones that I have for sale. The Gentex data tag on the inside states that the size is Regular.
The item "HGU-39/P Pilots U. Military Flight Helmet Helicopter Gentex" is in sale since Wednesday, May 04, 2016. This item is in the category "eBay Motors\Parts & Accessories\Aviation Parts & Accessories\Parts". The seller is "*txsgal*" and is located in Dallas, Texas.This item can be shipped to North, South, or Latin America, all countries in Europe, Australia.