The Warhead Vented Helmet Tactical Eye Goggles (item code 57533) can be used with these Warhead Helmet Attachment Auxiliary Line for Goggles for the best helmet fit possible. Great for airsoft use. Adapters sold in either black or desert tan color.The adapters slide into your rear helmet rail system. The velcro straps attach at the back of your helmet. Easy to use and install, then simply tie a single knot at the end of the paracord. You may be able to use this adapter with other goggle systems too.