Rion Padded Bib Shorts Expectant riders and just about everyone in the #PelotonMom tribe swears by these Rion Padded Bib Shorts ($26 - $30). Though they're not technically maternity wear, since there's no waistband, they're great at accommodating a growing belly. Image Source: amazon.com Rion Padded Bib Shorts $26 from amazon.com Buy Now