This simplistic yet beautiful 250ml tumbler provides a permanent second line of defense against bacteria using integrated Biomaster technology. Tested in accordance with ISO 22196, the antimicrobial agent is built into the material of the body and lid rather than just coated on the surface. It also includes Verimaster tracer technology to verify its protection. This BPA-free tumbler features a stainless steel outer and PP inner, with a closable lid for secure sipping.











