Someone recommended this to me: https://www.amazon.com/Goplus-Weatherproof-Shockproof-Customizable-Protection/dp/B081RY5HV3/ref=pd_ybh_a_5?_encoding=UTF8&psc=1&refRID=XBTWTB9XYM0DKAPJB0B8

You can also check out pelican cases on ebay, if you want to go really cheap, go used. And maybe get some pre-cut foam to fit it to your headset.