We have the "mini" version of  the Econappi.  It's a 2-part diaper system that allows you to use it either as a pocket diaper by inserting the included insert inside the pocket opening, or as an all-in-2 diaper by laying the insert on top of the diaper.  It is made with a waterproof outer layer of PUL and an inner layer of organic cotton velour.  It comes with an insert made with organic cotton velour and hemp. Its unique snap settings gives you 2 different sizes and allows you to adjust the size for a newborn and babies up to 15 lbs.