  This paper summarizes the main results of our recent study of the non-Blazhko
RR Lyrae stars observed with the Kepler space telescope. These stars offer the
opportunity for studying the stability of the pulsations of RR Lyrae stars and
for providing a reference against which the Blazhko RR Lyrae stars can be
compared. Of particular interest is the stability of the low-dispersion (sigma
< 1mmag) light curves constructed from ~18,000 long-cadence (30-min) and (for
FN Lyr and AW Dra) the ~150,000 short-cadence (1-min) photometric data points.
Fourier-based [Fe/H] values and other physical characteristics are also
derived. When the observed periods are compared with periods computed with the
Warsaw non-linear convective pulsation code better agreement is achieved
assuming pulsational L and M values rather than the (higher) evolutionary L and
M values.
