Englishbob, I've run into similar problems in the cloth room. Apparently Pose conciders "closed" areas as faces, in this case the upper and lower opening of the belt. If a cloth passes thru one "face" of an object Poser then disregards collision with other faces of the same object. One thing that has worked for me is to make the belt a non-closed object. Create a small break in the belt and either overlap it or just have the ends meet. mike