SAP gel. This is the thing that drives me crazy about G-diapers. When you read G-diapers promotional info, they are just plain deceptive when it comes to describing the "ingredients" of their dipes. They dance around so much with their wording, that they actually lead you to believe they use all natural eco ingredients! SAP is a harmful chemical that should never be composted! Its not just a danger for meat eaters who worry about tainted meat. The SAP goes into the ground/water supply system too!!