I was fortunate tonight to find this on Ebay at a good price. Its the 4th one Ive picked up and its prob the best one I've aquired. The seller billed it as a Navy Flight Helmet. A whole lot of people make that mistake. The strap alone if you can find one, the cost for just the strap is close to 40 bucks.
This Blast helmet is in great shape. I'l have to get it inhand but it looks real good. Size small.
The ear cups open up so you can place the headphones of the sound powered headset into the cups, thus shielding them from external noise from gun blasts. They are out there usually marked as Navy Flight helmets. But most of the ones Ive seen are ripped or missing chin straps.