NO METALLIC AFTERTASTE — The Ti-Zero is manufactured from Grade 1 pure titanium (TA1), a chemically inert metal that does not transfer a metallic flavor to beverages. That means coffee tastes like coffee, tea tastes like tea, and plain water remains neutral. The material is free from BPA and other toxic coatings.

LEAK-RESISTANT FLIP-TOP LID WITH REMOVABLE STRAW — The tumbler ships with a dual-mode lid: sip directly through a gasketed flip-top or use the included reusable straw. The straw detaches for cleaning or replacement, and both drinking modes use seals intended for upright carry in cup holders, backpacks, or tote pockets. For best long-term seal performance, store upright when transporting.

PERFORMANCE: HOT 6 HOURS / COLD 12 HOURS — The cup’s double-wall vacuum construction between two titanium layers provides thermal retention: tested with a 95°C fill at 25°C ambient, it keeps hot drinks warm for up to six hours and chilled drinks cold for up to twelve hours. The exterior stays sweat-free and comfortable to hold.

SIZE & WEIGHT — Capacity is 16.9 oz (500 ml). The bare mug body weighs about 150 g (5.3 oz); with the leak-resistant lid attached the total weight is roughly 230 g (8.1 oz), making it noticeably lighter than many stainless steel travel mugs. The slim 2.8-inch base fits standard car cup holders and the 7.6-inch height works well for backpack side pockets.

PURE TITANIUM CONSTRUCTION — There is no stainless steel anywhere in the body of this mug. Whole-body Grade 1 titanium eliminates nickel, chromium, and manganese concerns found in some steel alloys and requires no internal coatings that could peel or chip. The interior and exterior are titanium, polished to a naturally faceted surface.

BIOCOMPATIBLE, LOW-REACTIVITY HYDRATION — Titanium is the same biocompatible metal used in medical implants and dental work because it reacts very little with body fluids and foods. This tumbler is free from BPA, BPS, phthalates and chemical liners, so it’s suited for those with metal sensitivities or who prefer a chemically neutral vessel.

WHAT’S IN THE BOX — Each set arrives in a premium black gift box and includes the titanium tumbler, the leak-resistant flip-top lid, a removable reusable straw, a small brush for cleaning the straw, and a handmade penguin mascot that accompanies the manufacturer’s lifetime warranty documentation.

WIDE MOUTH AND CARE — The wide mouth and seamless interior accept ice cubes, frothy drinks, and are easy to rinse. Top-rack dishwasher safe, though hand washing is recommended to help preserve vacuum-seal integrity. Not suitable for microwaves or open-flame heating due to its vacuum-insulated construction.

LUNAR CRYSTAL FINISH — The finish shows natural multi-faceted titanium crystals that catch light and shift subtly between silver, blue and violet tones; each piece is unique. The textured polish helps resist fingerprints while providing a premium look for office, travel, workout, and weekend use.

LIFETIME WARRANTY — The manufacturer offers a lifetime warranty on the titanium body against defects. Register the product at the maker’s website within the stated registration window to activate coverage and access customer support.

VerdictIf you want a travel mug that won’t impart metallic notes and stays light in your bag, this whole-body Grade 1 titanium tumbler delivers. It’s far lighter than comparable stainless steel cups, resists flavors, and maintains temperatures for hours thanks to vacuum insulation. The flip-top lid and removable straw add versatility, though some users report lid sealing issues. Overall a premium-feeling

Electrician I. 2/5

Not worth the premium for me

I expected superior performance for the price. It didn’t keep my coffee hotter than my old mug, and the lid can come loose when carried by the strap. I’ve had spill incidents, so I don’t trust it for travel.

tang 1/5

Finish peeled early

Handled with care and handwashed, yet the name/marking peeled off within days. Disappointed by that durability issue.

Kim Arizpe 1/5

Received wrong color

Product works fine, but the color sent wasn’t what I ordered.

Jim J.L 5/5

Lid leaked at first — replacement fixed it

Titanium body is excellent quality but my lid leaked under coffee. Seller sent a replacement lid which solved the problem. Customer service was proactive and helpful.

Mark 4/5

Nice look but shorter heat retention

Love the lightness and colors, but for me it only kept hot drinks warm up to around three hours.

Jennifer 5/5

Solid travel mug

Arrived quickly and looks great. Used it for coffee so far and it kept the temperature comfortable.

D. Summers 5/5

Great for daily use

I use this every day. It holds heat well during short outings; after a couple hours in a cold vehicle my tea stayed mostly warm. I bought two for the household and recommend it.

Joy 5/5

Clean-tasting, lightweight, mostly leak-proof

After years of stainless mugs that retained odors, this titanium cup felt like an upgrade. Well presented in the box and feels precisely made. Used daily for hot coffee and carried in a backpack with no lingering smells.

DrDCD 5/5

Eye-catching Titanium Finish

Just arrived and looks like the product photos. Packaged like a premium gift. Bought it mostly for the titanium construction — haven’t used it for hot drinks yet but tested the lid and seals while cleaning and didn’t find leaks.

lcpan 5/5

Light, pretty, and no weird taste

Delivered in attractive packaging. The cup is extremely light and the pink has a shifting, premium tone. Interior texture looks artisanal. Used it for iced lattes all week with no off smells or flavors.

KOYASU Ti-Zero 16oz Pure Titanium Travel Tumbler — Insulated Mug

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