  Every closed oriented manifold $M$ is associated with a set of integers
$D(M)$, the set of self-mapping degrees of $M$. In this paper we investigate
whether a product $M\times N$ admits a self-map of degree $d$, when neither
$D(M)$ nor $D(N)$ contains $d$. We find sufficient conditions so that
$D(M\times N)$ contains exactly the products of the elements of $D(M)$ with the
elements of $D(N)$. As a consequence, we obtain manifolds $M\times N$ that do
not admit self-maps of degree $-1$ (strongly chiral), that have finite sets of
self-mapping degrees (inflexible) and that do not admit any self-map of degree
$dp$ for a prime number $p$. Furthermore we obtain a characterization of
odd-dimensional strongly chiral hyperbolic manifolds in terms of self-mapping
degrees of their products.

Algebraic Topology;Geometric Topology