Love, love, love Sandy's! They have been our night diap for over a year, still fit, still in fabulous shape! I've never used them for day, but I wouldn't think you would need a doubler unless on a long outing or car trip. In that case, a Sandy's stay dry on cotton doubler works great. I use one, plus a Thirsties hemp doubler for night, and the diap is never fully saturated.
Yes, they will fit and last forever, and can even be used as trainers, so drop the guilt and enjoy!
, married to dh for 22 years!
Homeschooling mom to ds17
our 3 1/2 year old potty princess