The softbums bamboo (either the large or the onesize) are narrow enough that they will fit in pretty much any shell.
Michelle, wife to Mark, mommy to Michael 6/09 and Mavick 02/29/12!! Green Diaper Demos on FaceBook. Free Shipping over $40 in US with SHIP40
SoftBums, itti bitti, bG, Thirsties, CJ's BUTTer, Rocky Mountain Diapers, Oh Katy, Mother-ease, RNG + more!