Double-wall 304 stainless steel R-SiO2 Ceramic Coated liner Screw Lid 100% BPA free, phthalates free, toxins free leak-proof silicone seal Food-grade Plastic Parts Does not retain nor impart any flavor...

【Ultralight and Stronger】Titanium is a magical element, stronger than stainless steel, but much lighter in weight. You carry this bottle on your commute every day, you won't notice carrying it...