That's a Big 10-4 - vintage cap
Breaker breaker, that's a big 10-4, vintage snap back cap in kelly green. And for all that have no idea what this means, look up CB radio lingo, copy?
- Soft nylon poly blend.
- One size - fits 6 7/8" to 7 5/8".
- Made in USA.
- Only one! The foam in the front of this cap is long since gone, taking this style from trucker cap to a bit more curved fit front.