The interior has a blaze red/orange panel, for emergency signaling. I have seen these before on hats, but this is a first (for me) featured on a multicam boonie.
At the rear, there is a shock-cord adjustment...this will allow you to put a little tension on your head for those windy days. It also allows a bit of size adjustment.
There are two opposing vents, which allow a bit of heat to escape from the inside of the cap (great for those hot Texas days).
An on the inside, the is a small mesh fabric, which will prevent bugs from sneaking into the vents and getting on your head.
Overall, I am impressed. The quality is good, the make followed my specifications closely, IT FITS, and the features are unique. This boonie may not be for everyone, but I can appreciate the useable designs built into this cap.
The maker is Dave and he can be reached via: