The exponent for 𝜙 0 in Figure is in remarkable agreement with the mean field model prediction, however, this point has to be considered with care. It is expected that entanglements cause a stronger concentration dependence of the equilibrium degree of swelling as can be judged from swelling data on Olympic gels ∝ 𝜙 0 -0.72 and theoretical predictions up to ∝ 𝜙 0 -1 . Network defects have a strong impact on the scaling of equilibrium swelling data. In particular, preparation of model networks at low 𝜙 0 enhances the formation of network defects leading to a stronger dependence on 𝜙 0 . Such nonidealities are minimized by our network architecture.