There was an earlier discussion about the Longchamp Pliage sizes that fit the Birkin--I just ordered one from the Longchamp website that fits my Bolide 31 perfectly. I ordered the medium size, with long handles so I could carry it over my shoulder. Folded, it does just fit inside the Bolide, but it is a bit bulky. I will definitely use it for travel, and maybe cram it inside the Bolide on days it might rain.