Constraints on the age of the MML 53 system given by the comparison of the direct measurements of the sum of the radii and the temperature ratio of the eclipsing components against the theoretical evolutionary models of Baraffe et al. (2015). The models were interpolated at the measured masses of the eclipsing component stars, M₁ and M₂. Top panel: value of the temperature ratio for stars of these two masses as a function of age (black line). The gray region includes the range of model values allowed for the 1-σ uncertainties on the masses. The horizontal, blue shaded area is the measured temperature ratio and its uncertainty derived from the EB model. Similarly to above, the bottom panel shows in the black solid line the evolution of the sum of the radii (1-σ uncertainty in gray area), as compared to the direct measurement of the sum of the radii and its uncertainty in purple.