A massage instrument 0 comprising a base 1, at least three supporting balls 3, and a rolling body 5, in which the supporting balls are individually and protrudably housed in the base. At least one of the supporting balls may be supported by a number of smaller ball bearings (7, fig 7b) which may have freedom to reorder in a contained cavity. A supporting ball together with smaller supporting ball bearings 7 may be bound by a retaining fixture (9, fig 7b) that is preferably retained in the base. A retaining fixture 9 may be removably magnetically retained in the base 1 by a permanent magnet 11 affixed to the base.
