The KOA Massage Tool's versatile pressure points are made with German polymers. Our plastic formulation is proprietary and DO NOT contain the following as raw materials:BenzotriazolBisphenol A (BPA)Bisphenol S (BPS)Dimethyl fumarateLatexOctabromodiphenyl ethersPentabromodiphenyl ethersPolybrominated diphenyl ethers (PBDE)Polybrominated biphenyls (PBB)