Mindball Game headbands are compatible with Mindball Game, Mindball Game Core and Mindball Game Multiplayer.
Should you have a Mindball Trainer (no longer produced) the headbands are compatible to this product as well.
The Neoprene version is very comfortable but do requires some regular cleaning in order to look nice.
The Vinyl version is less comfortable but do not require regular cleaning in order to look nice.
The Leather version combines comfort with less cleaning.