  Localized static solutions of the 2D-O(3) model are investigated in a
representation with the 3-vector field $\vec Phi$ split into the unit vector
$\hat Phi$ and the modulus $\Phi$. As in the nonlinear version of the model
this allows for the definition of a topological winding number $B$, and for the
separation of the complete configuration space into distinct $B$-sectors. For
small values of the $\Phi^4$-coupling strength the stable energy minima in
these sectors are characterized by bag formation in the modulus field which in
the standard cartesian representation of the linear O(3) model would be
unstable towards decay into the trivial B=0 vacuum. Stabilized by
$B$-conservation they exhibit a surprising variety of very appealing features
for multiply charged systems. With the total charge bound into one common deep
bag opposite ways of distributing the topological charge density inside the bag
can be realized: Pointlike structures which retain the individuality of single
constituents (or doubly charged pairs), or a deconfined charge density spread
uniformly throughout the interior of the bag. It is suggested that this
extension supplies a crucial link to overcome the unsatisfactory existing
mismatch between multiskyrmion configurations and nuclear structure.
