"If you're going the speed of light and hit something, an X-Wing helmet isn't going to do you much good."
X-Wing Pilot Uniform — Helmet
Source: FlightHelmet.com
The X-Wing helmet is an APH-6 flight helmet and was used during the war in Vietnam.
Source: Converting an APH-6 Helmet
You have a few different options when looking for an X-Wing helmet. If money is no issue, I highly recommend purchasing an APH-6 helmet (see vendor list below or call your local Army Navy Stores) and contact Richie's Armor for a conversion kit. Use these instructions for the conversion.
Source: Richie's Armor
Your second option is to purchase a mold that is based on a converted APH-6 helmet. Richie's Armor carries a good one for around $100 unfinished.
The least expensive route is to buy a Don Post helmet from E-Bay. These run about $60 - $70.
Resources
Converting an APH-6 Helmet
Vendors
FlightHelmet.com (Pre-converted helmets)
Richies Armor (Complete, Kit and Converted APH-6 Helmets)
X-Wing Project Page
