These are plain head caps with ear slits, in various sizes and configurations.  Note that special cap patterns are available with added material on the sides and in the back, and just about anything you need should be possible to make, even if not listed here.  If you can diagram it and provide a logical explanation of where you want sensors positioned, we can make it.  Note that the chin straps provided with these head caps do contain a metal snap, so they are not recommended for use with TMS or MRI / fMRI.