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BPA-free and toxin-free where it is tested: your water touches nothing but uncoated 18/8 steel. No liner, no coating, nothing to wear through. Independently tested for lead under the US CPSIA, and we retest every year. The current report is on our certificates page.

Yes. 18/8, also called 304, is the same food-grade alloy used in commercial kitchens and cookware. It is non-reactive and contains no BPA or phthalates. The migration and lead reports are on our certificates page. People with a nickel sensitivity should note that 18/8 contains 8 percent nickel, bound in the alloy.

Not if the steel is uncoated and food-grade. A metallic taste usually comes from a damaged inner coating or from a low-grade alloy. Our bottles have no inner lining at all, so there is no coating to wear through.

Yes. The silicone seal is tested with sparkling water, which is the harder case because carbonation builds pressure. Open it slowly after shaking, as you would any pressurized bottle.

Ours are, every part of them: bottle, cap and seal. Take the seal out of the lid once a week and wash it separately. It dries fully and keeps its shape.

Use the included natural-bristle brush and warm soapy water; the wide mouth lets the brush reach the bottom. For smells, fill with warm water and a spoon of baking soda, leave overnight, then rinse.

25 hours cold and 13 hours hot, with no preheating. There is no battery and nothing to charge; the vacuum between the two steel walls does the work.

Most adults need roughly 70 to 100 oz of fluid a day. That is about two refills of a 34 oz bottle. Hot weather, exercise and altitude push it higher. Carrying one marked bottle makes the count easy: you refill it a known number of times instead of guessing.

You replace the seal, not the bottle. Every seal, cap, brush, carabiner and carry bag is sold on its own under spare parts. Defective parts are replaced free within the 3-year warranty.

The classic bottle and the silicone grip bottle, lid included. The body is uncoated 18/8 (304) steel, the seal is food-safe silicone. The Double Vacuum is different: its click lid is plastic. The body is steel, the lid is not.

Same 18/8 steel body underneath, same 25 hours cold and 13 hours hot. The grip bottle wears a silicone sleeve on the outside. It gives grip in the hand and a quiet set-down on a desk. Six colors. The classic bottle shows the brushed steel.

No. The sleeve sits on the outside of the bottle. Inside, your water touches uncoated 18/8 steel and the food-safe silicone seal in the cap. The seal is tested for food contact under FDA 21 CFR 177.1210. That report is on our certificates page.

17 oz, 25 oz and 34 oz for the classic and the grip bottle. The Double Vacuum adds a 12 oz size. The sleeve comes in six colors. The classic bottle weighs 0.66 to 1.08 lb empty, depending on size.

On the classic and the grip bottle, yes. The opening is 1.96 in wide, so ice cubes drop in and the brush reaches the bottom. The Double Vacuum has a narrower neck and fits a cup holder instead.

A spare seal, a cotton carry pouch and a natural bristle cleaning brush, with every bottle. The spare seal is already in the box, so the first swap costs nothing.

Yes, the classic bottle and the Double Vacuum, each in one fixed position. Express Engraving: order by 1 PM PT and we engrave it the same day, in our own facility in CA. Engraved bottles cannot be returned, so check the spelling before you order.