Polyester Solutions PolyBatts are specially formulated lightweight products manufactured from a blend of polyester fibres. Polyester Solutions Thermal Batts and Rolls contain a high percentage of recycled polyester fibres that are thermally bonded and manufactured to comply with AS/NZ 4859.1. Polyester Solutions Polybatts and Rolls are non-toxic and user- friendly insulation, requiring no specific protective clothing and will not corrode or deteriorate over time. The products are generally white in colour.