UD Replicas Batman help

Hey all,
I bought a UD replicas batsuit a while back, it is fantastic and worth every penny but that's not why I'm posting. I was wondering if anyone else has purchased one and if so, how do you get around covering your neck while you wear your cowl? I bought a really great cowl on eBay and I have an underarmor head sock but as I wear it all and I am sweating, the sock starts to fall down and I am left with a gap right under my chin. Any help or suggestions would be greatly appreciated.

Thanks in advance.