  We propose a top and bottom seesaw model with partial composite top and
bottom quarks. Such composite quarks and topcolor gauge bosons are bound states
from supersymmetric strong dynamics by Seiberg duality. Supersymmetry breaking
also induces the breaking of topcolor into the QCD gauge coupling. The low
energy description of our model reduces to a complete non-minimal extension of
the top seesaw model with bottom seesaw. The non-minimal nature is crucial for
Higgs mixings and the appearance of light Higgs fields. The Higgs fields are
bound states of partial composite particles with the lightest one compatible
with a 125 GeV Higgs field which was discovered at the LHC.
