Our reusable breast pads have a waterproof outer layer made with 100% recycled polyester which are from post consumer recycled bottles. The outer layer also has a PUL (Polyurethane Laminate) bonded to the inside which makes it waterproof.   The core is a 100% polyester towelling which is super absorbent. The inner layer is 53% recycled polyester and 47% polyester knitted in a honeycomb structure which draws the milk from the surface of the pad and holds it in the core.   The inner layer is not 100% recycled because the fibre structure works better as a blend of the two types of raw material.  The non-recycled polyester in this fabric is ionised with bamboo charcoal which gives it its anti bacterial and odour preventative properties currently they cannot ionise recycled fibres.