Yes — Cleo vessels are made from 99% pure copper, unlined and unlacquered. Because there is no lacquer or coating sealing the surface, your bottle will darken and develop a patina within the first few weeks. That change is the material behaving normally, and it is the clearest sign you are holding uncoated copper rather than a sealed, permanently shiny imitation.

Copper is also a soft metal. It marks, dents and scuffs more readily than stainless steel, and each piece is finished by hand, so surface variation between bottles is normal rather than a fault.

They are built for different jobs, and we will happily talk you out of the wrong one. Stainless steel is lighter, cheaper, dishwasher-safe, and shrugs off ice, citrus, coffee and abuse. Copper is a handcrafted vessel for plain room-temperature water: heavier, hand-wash only, and it changes colour as you use it.

If you want a bottle for the gym, a hot commute, or lemon water, buy stainless steel. If you want the copper ritual — a vessel that ages, gets refilled every morning, and looks like an object rather than equipment — that is what we make.

Storing drinking water in copper is a practice thousands of years old — known in Ayurveda as tamra jal — and that tradition is what we make these vessels for. We are deliberately careful here: we do not claim a Cleo bottle will treat, prevent or improve any health condition.

Copper is an essential trace mineral the body needs in small amounts, and researchers have studied copper's interaction with stored water for decades. But a Cleo bottle is a piece of drinkware, not a medical device, a supplement, or a water filter. Plenty of brands in this category will tell you otherwise. We would rather you buy ours because it is beautifully made and honestly described.

If you are wondering what copper means for your own health specifically, that is a conversation for your doctor — and we would genuinely rather you have it than take our word for it.

Our bottles hold 34 oz (1 litre) — roughly four glasses of water. The full range:

• Cleo Copper Water Bottle — 34 oz / 1 L (10.6 in tall, 2.7 in wide, 9 oz empty)
• Moonlight Copper Water Bottle — 34 oz / 1 L
• Hammered Tumblers, set of 3 — 8.8 oz each
• Copper Water Dispenser — 271 oz, with two glasses and a wooden stand

Because every piece is hand-hammered, dimensions vary by around 2–5%. No two are identical — that is the point of handmade, but it does mean yours will not be a machine-perfect match to the photograph.

Plain, still, room-temperature water. That is genuinely the whole list. Copper is a reactive metal, and anything acidic, fizzy or hot will pull more copper into your drink than belongs there.

So please avoid:

• Lemon water, lime, or any citrus
• Juice, sports drinks, soda or anything carbonated
• Tea, coffee, or any hot liquid
• Milk, alcohol, vinegar drinks, or added salt

It is a narrower brief than a stainless steel bottle, and worth knowing before you buy.

No — and this is the single most important thing on this page. Lemon juice is acidic, and acid dissolves copper far faster than plain water does, which means more copper ends up in your glass than you want to drink.

One thing that confuses people: lemon and salt are the traditional way to clean a copper bottle. That is fine, because you scrub, rinse it out thoroughly, and dry it. Cleaning with lemon, good. Drinking lemon water out of it, no.

No — room temperature only.Heat accelerates the same reaction that acidity does, drawing more copper into the liquid. Copper also conducts heat extremely well, so a bottle of hot liquid becomes uncomfortable to hold almost immediately.

Fridge occasionally, yes. Freezer and dishwasher, never.

• Fridge — a few hours will not harm the bottle. We still suggest room temperature, both because that is the traditional practice and because condensation left sitting on the outside will mark the finish. Dry it if it sweats.
• Freezer — no. Water expands as it freezes and can distort the vessel or split a seam.
• Dishwasher — no. Detergent and heat will strip and blotch the copper permanently. Hand wash only.
• Microwave — no, it is metal.

The traditional practice is to fill your bottle at night and drink it in the morning — roughly six to eight hours. That overnight rest is the whole ritual of tamra jal.

We will be straight with you: there is no official health-authority limit on how long plain water may sit in copper, so anyone quoting you a precise safe-hours cutoff is guessing. Our practical advice is simply to refill daily rather than letting the same water stand for days, and to give the bottle a proper clean every week or two.

Traditionally, a glass or two in the morning — not your entire day's water intake. Copper vessels are used as part of a routine, not as a replacement for every glass you drink.

For context rather than as advice: the US EPA sets an action level of 1.3 mg/L for copper in drinking water, and the World Health Organization's guideline value is 2 mg/L. If you want a number that applies to you specifically, ask your doctor — we are not in a position to give you one.

That is patina, it is normal, and it is actually proof you bought real copper. Pure copper reacts with air and water and darkens to a brown-black tone over the first few weeks. It is not dirt, mould, or a defect, and it does not mean the bottle has gone bad.

If you like the darker aged look, leave it. If you prefer it bright, clean it with lemon and salt as described below — it comes back every time, and so does the patina.

Green is different from brown, and it does need attention. Green deposit — verdigris — forms when copper stays damp for long stretches, usually from being stored wet or left unwashed with water in it. Unlike ordinary dark patina, it can flake.

Clean it off properly before you use the bottle again: lemon and salt, or vinegar and salt, then rinse thoroughly and — the important part — dry it completely, inside and out, before storing it. Leaving it to air-dry with the lid off prevents almost every case of green we see.

Lemon and salt, every one to two weeks. Here is the method:

• Add the juice of half a lemon and 1–2 tablespoons of salt to the bottle
• Fill with warm water and swirl for a minute or two — use the coir brush for the inside
• For stubborn spots, let it stand 10–15 minutes before scrubbing
• Rinse thoroughly, then dry completely before storing, lid off

White vinegar and salt works just as well. Never use abrasive pads, bleach, or the dishwasher — all three damage the surface permanently.

Your cleaning brush ships inside the bottle to protect it in transit — check in there before assuming it is missing.

Usually it means the bottle is due a clean, or water has been standing in it too long. A light mineral note is normal with copper, especially in the first week or two. A strong metallic taste is a signal, not a fault.

Clean it with lemon and salt, rinse well, dry it, and refill with fresh water. If the taste persists after a proper clean — or if anything acidic went in at some point — stop using it and email us.

Rinse it with warm water, fill it, and let it rest a few hours or overnight. That is it. Your brush and canvas bag are packed inside the bottle.

Expect the inside to start darkening within days — that is the copper doing what copper does, not a manufacturing flaw.

For most healthy adults, plain water in a clean copper bottle used as intended is fine. Copper is a mineral the body needs in small amounts. The risk is not copper itself — it is getting too much of it, which is why the usage rules on this page matter.

Too much copper causes nausea, stomach pain, vomiting or diarrhoea. In practice that comes from misuse: acidic or hot drinks stored in the vessel, or a bottle that is never cleaned. Stick to plain room-temperature water, clean it regularly, and dry it between uses.

If you have Wilson's disease or any condition affecting how your body processes copper, do not use a copper vessel without talking to your doctor first. Wilson's disease causes copper to accumulate rather than clear, and copper drinkware is specifically something people with it are advised to avoid.

If you are pregnant or nursing, or thinking of using one for a child, please check with your doctor as well. We would rather lose the sale than have you guess.

Cleo products are drinkware. Nothing here is medical advice, and none of it has been evaluated by the FDA. Our bottles are not intended to diagnose, treat, cure or prevent any disease.

You will get a tracking link by email as soon as your order ships. If it has been longer than 4 days and you have no tracking, email us and we will chase it down — that is on us, not you.

Look inside the bottle. To protect them in transit, the coir brush and other small accessories are packed inside the vessel itself rather than loose in the box. This catches out a lot of people.

Checked and genuinely not there? Tell us and we will send one out.

If your bottle arrived damaged, email us a photo and your order number within 7 days of delivery and we will arrange a replacement. Transit damage and manufacturing faults — seam leaks, a lid that will not seal, a cracked or crushed vessel — are covered.

Worth trying first with a leak: copper threads seat differently from plastic ones, so check the lid is on straight and turned a firm quarter-turn past where it first feels tight.

What is not covered is ordinary wear. Copper is soft, so scuffs, small dents from daily handling, and the darkening of the surface over time are characteristics of the material rather than defects.

please check our refund page

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It is one of our most-gifted pieces — each one is handmade, so no two are quite identical. For anything date-sensitive, order with a comfortable buffer against the shipping window above, and email us the date so we can flag your order.

Worth knowing before you gift one: this is a bottle for plain room-temperature water, hand-washed. If the person you have in mind wants a citrus-in-the-water, throw-it-in-the-dishwasher bottle, it will disappoint them.