Slangvel makes some cool stuff but I am not sure he makes anything cooler than this helmet cover. It is modeled after the South African Paratrooper helmet covers with a flip down brim. He has adapted the design to fit the MICH/ACH helmet and similar. It also features a flap covered high viability ID panel at the rear.
Check out Slangvel’s Facebook Page too keep up on all his projects.
I’ve seen his work first hand, NICE!