Titanium vacuum cup, Made of TA1 Pure titanium(purity ≥99.6%)  construction ensures no metallic taste, zero heavy metal leaching, and superior corrosion resistance—all while being significantly lighter than stainless steel. The vacuum insulation keeps drinks hot or cold. Designed with a leak-proof BPA-free lid and anti-slip base, titanium vacuum mug is ideal for commuting, the office, camping, and hiking.