Panel A: estimate of B_⋆ for ϵ Eridani as a function of p_B. Panel B: estimate of Ṁ as a function of p_B. In blue: predictions of our prescriptions. Dashed blue lines: normalizations corresponding to B_⊙ = 0.6 G. Dotted blue lines: normalizations corresponding to B_⊙ = 4 G. Red bands: observational constraints on the dipolar component of the magnetic field (Jeffers et al. 2014; See et al. 2017) and the mass-loss rate (Wood et al. 2002). The light gray band corresponds to the upper and lower bounds of p_B from a large sample of ZDI studies. The black contours delimit the region of B_⋆ and Ṁ, which is consistent with statistical ZDI studies and individual measurements of the large-scale magnetic field. In beige: estimates consistent with all of the constraints considered.