KOYASU® Ti-Zen™ Titanium Travel Coffee Mug - 12oz Ultralight Insulated Tumbler - Leakproof Commuter Cup for Men & Office Desk Accessory - Minimalist Portable Tea Flask for Travel & Car- Indigo Blue

Specifications

• AEROSPACE-GRADE PURE TITANIUM & LIFETIME WARRANTY – The perfect 12oz capacity for specialty coffee lovers and ultralight hikers. Built entirely from medical-grade Ti-Zen titanium, it is 42% lighter than stainless steel and fits most car cup holders for a seamless commute. Naturally BPA-free and chemically inert, it ensures zero metallic taste. We proudly offer a LIFETIME WARRANTY on the titanium body—an investment built to last through every adventure.
• WHY TITANIUM — THE KOYASU MATERIAL COMMITMENT. Titanium is rarer than stainless steel and far more demanding to extract, refine, and form. Its high melting point and complex processing require advanced manufacturing and strict quality control. KOYASU chooses titanium not because it is easy or affordable—but because it delivers unmatched purity, durability, and long-term trust for everyday life.
• BIOCOMPATIBLE & HYPOALLERGENIC – Trusted by Science. Titanium is used in surgical implants and dental tools for a reason: it's biocompatible, non-reactive, and ultra-safe. The Ti-Zen interior protects your health, ensuring no heavy metals ever leach into your daily coffee.
• DOUBLE-WALL VACUUM INSULATION – Keeps Drinks Hot or Cold. Engineered for thermal stability. The double-wall Ti-Zen construction keeps your morning brew piping hot for hours without sweating condensation onto your office documents or desk.
• WIDE MOUTH & 100% LEAK-PROOF LID — DISHWASHER SAFE & EASY TO CLEAN The wide-mouth opening allows effortless filling from streams or kettles. The solid titanium body is dishwasher safe and rinses clean easily in the wild—no lingering odors, no residue buildup.
• NO COATING, NO PAINT, NO WORRIES – Featuring a 100% Raw Titanium Surface with a Crystal Silver finish that showcases the natural, rugged beauty of the metal. With no paint to scratch or peel, it is engineered to handle the abuse of the trail and looks better with every adventure. Because this finish is permanent and eco-friendly, we proudly offer a Lifetime Warranty on the cup body—ensuring your investment stays pristine for a lifetime of use.
• Exceptional Durability & Lifetime Warranty – Built for daily use and a lifetime of adventure. Our 100% pure titanium body is naturally corrosion-resistant and engineered to last for generations. We stand behind our craftsmanship with a Lifetime Warranty on the titanium flask body against manufacturing defects—KOYASU mugs are built to last.
• ELEGANT INDIGO FINISH – For the Modern Professional. The minimalist "Crystallized" texture in deep Indigo Blue offers a sophisticated, understated aesthetic. It is the perfect desk accessory for executives who value function and style.
• ECO-FRIENDLY & REUSABLE – Zero Waste Alternative. Ditch single-use paper cups. KOYASU mugs are sustainable, non-toxic, and endlessly reusable—a smart investment for you and a better choice for the planet.
• VERSATILE FOR ANY SETTING – Office, Home & Travel. One mug, everywhere. From your morning espresso at home to the boardroom table and business flights, the KOYASU Ti-Zen is the ultimate travel companion.