Best diapers of 2020 | BabyCenter
Jul 07, 2000·You don't have to be a Costco member to buy these, but members get the lowest prices. Parents say "We use Kirkland diapers and have from size 1 on. They're great! They hold a lot and are reasonably priced. We've never had a blow out in them either!" "I really liked these for my daughter. We never had issues with leaks or blow-outs.