They offer disposable inserts or a variety of cloth inserts such as stay dry day inserts, organic cotton daytime inserts, and organic cotton night time inserts. (earlymomentsmatter.org)
The only thing I would say is that I don't have enough night time inserts you might need 1 - 2 more. (diaperjunction.com)
Our next choice for the Flip diapering system is their organic cotton night time inserts. (earlymomentsmatter.org)