After the Coffee

The problem with most travel tumblers isn't the lid seal. It isn't the handle, or the finish, or whether it fits in a cup holder. The problem is the coffee that was in it yesterday.

Carry the same tumbler for a week, coffee one day, water the next, tea the day after, and by the end you're not drinking water. You're drinking a faint memory of everything that came before it. That isn't a cleaning problem. It's a material problem.

Why 304 Stainless Steel

The body is made from 304 stainless steel, an alloy of 18% chromium and 8% nickel. Lower grades like 201 and 202 are common in the category and offer surface-level corrosion resistance that degrades over time and under the cleaning cycles a daily-use tumbler actually goes through. 304 maintains a passive oxide layer that is chemically invisible and self-repairing. It holds up to dishwasher temperatures and alkaline detergents without losing integrity, and it doesn't interact with whatever you put inside it.

The lid seals and gaskets are BPA-free throughout. No bisphenol A, no endocrine disruption risk, no compromise on the components most likely to contact your drink at temperature. These are details that tend to sit in the small print. We think they belong up front.

The Ceramic Interior Coating

Japan's chawan, the ceramic bowl used in the tea ceremony, is made from clay rather than metal or plastic for a specific reason. The material is inert. It contributes nothing to the drink and takes nothing from it. The tea is allowed to be exactly itself. That principle is several hundred years old, and it's the same one we've applied to travel drinkware.

The interior of the Canard tumbler is ceramic-lined. The coating is non-porous and chemically inert. It doesn't absorb flavour compounds, doesn't stain, and carries no residue from one drink to the next. Wash it once and it's clean. Fill it with water after a coffee and it tastes like water. That sounds like a low bar. In the category, it isn't.

Most travel tumblers are engineered to keep your drink the right temperature. This one is engineered to keep it tasting right as well.

The Right Size for Travel

The size question in travel drinkware almost always resolves the wrong way. Bigger feels like better value, so the category defaults to 600, 700, 900ml. We landed on 500ml because it's the volume that works across hot and cold use, fits a carry bag and a cup holder without requiring a dedicated pocket, and doesn't ask you to finish it before your bag closes. It's enough for a full coffee or a long walk, without trying to be more than that.