The Higgs naturalness problem can be addressed by considering the Higgs as a composite state emerging from a new strong dynamics.
Beside the Higgs, new composite states: vectorlike quarks, vector resonances and new composite scalars, are predicted to exist in the few TeV energy range and to leave observable imprints at the LHC and future colliders. I will discuss their phenomenology, with special focus on the direct detection at colliders.