Most water bottles use 304/316 stainless steel that leach metal ions into hot drinks, leaving metallic aftertaste. Our TiMaker pure titanium flask solves all these issues: ✅ 100% Medical-Grade Pure Titanium Liner Titanium is hypoallergenic, corrosion-resistant, and completely non-reactive with tea, coffee, fruit acids, and herbal drinks. No weird metal flavor, preserve the original taste of your beverage. ✅ Ultra-Light & Durable Titanium Body Titanium is 40% lighter than steel, tough against scratches and daily drops. All-over matte brushed metal finish, minimalist sleek metallic look for men & women. ✅ Long-Lasting Double-Wall Insulation Vacuum insulated double-layer structure locks temperature perfectly: