Last week we announced Sigg’sWhat’s your Eco-Style” bottle design competition– a post that was met with comments and questions from intrigued readers wanting to know more about the company, their production techniques, particularly the choice to use aluminum as a drinking vessel.

Although the eco-friendliness of an aluminum drinking container may not be obvious at first glance, think of all the plastic water bottles you AREN’T buying if you’re toting around a stylish, sturdy, reuseable and recyclable Sigg bottle. It turns out the Swiss-engineered bottles are the result of a high-tech, low-waste production method that starts with a piece of aluminum the size of a hockey puck.

1) The process begins with a solid piece of 100% recyclable aluminum about the size of a hockey puck.

2) In one fell swoop (and 650 tons of force), the “puck” is extruded into a cylindrical shape.

3) The cylinder is then pressed into the various Sigg bottle shapes with recessed necks, ribs, etc. The neck is formed using about 26 different manufacturing steps (it’s hard to make something so precisely leak-proof!)

4) A threaded ring is inserted into the neck and secured in place.

5) The bottle is thoroughly cleaned, inside and out, using ecologically friendly cleaning agents.

6) The inside of the bottle is sprayed with a taste inert, food-compatible stove enamel and baked on (this is the stuff that makes your water NOT taste like aluminum foil).

7) The outside is coated with a solvent-free powder paint and logos are applied (this is where YOU come in- submit your designs for the next bottle design to the “What’s Your Eco-Style” competition!)

8) Add a bottle top (in 3 interchangeable forms), and that’s it!

On top of the uber-efficient manufacturing processes and recyclable material, the bottles are also eye-catching and colorful, boasting some great graphic design for bikers, moms, kids, and greenies alike. Watch an interactive step-by-step of the manufacturing process on Sigg’s website here.

+ What’s Your Eco-Style bottle design competition



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  1. mrfinch October 15, 2009 at 2:34 am

    I thought that Sigg had a good thing going until they recently admitted that the lining in the bottles contains bispehenol A! I thought that’s what we were trying to stay away from. Compounding the problem is the fact that they told me specifically that there was no bispehenol A in their bottles when I bought one at their trade show booth. When asked in the media about this, they said it was only a “trace” amount. Funny how they once said that even a “trace” amount is too much. This is just plain dishonest.

  2. lauriew June 27, 2009 at 9:11 pm

    well i taste something funny in my sigg. i love the color and have been using it religiously. but today i left it in the car and not only did the water that had been in the 100 degree heat taste like metal but when i poured it out it had a gray tint to it. I had dropped it a week ago on cement and it was dinged up. maybe this is whY? when i looked inside it looked like the color on the inside was washing off into the container. I am so freaked out about this taste and coloration and have no idea what to do! any ideas?

    seems like nothing we do is fool proof?

  3. Talula May 27, 2008 at 9:23 am


    Your Nalgene bottle (and all polycarbonate #7 recyclable bottles) are made with a chemical called bispehenol A. This has been proven in labs to act like food for certain types of cancer – including breast cancer. And yes, it does leach into the liquids being contained. Bisphenol A is not only found in plastic bottles but also in the cans used to hold soda and food products. The good news is that Nalgene recently announced it will produce BPA -free bottles (although it still denies the dangers found in independant studies done on BPA).

    Sigg says they can’t comment on the ingredients used in their lining because of a proprietary issue with their manufacturer. However, tests done on the linings have shown that after 2 years of frequent use there was no trace of BPA or several other chemicles in the water. Another positive aspect of Sigg bottles is that you can use any type of liquid in them – acidic fruit juices and soda included. I don’t believe the same can be said for stainless steel.

  4. jandazza May 9, 2008 at 3:13 pm

    Is a Sigg really a better choice than my tried and true Nalgene?

  5. donny April 27, 2008 at 10:08 pm

    Funny thing everyone trying to list the pro\’s and con\’s of the bottles.
    I have been retailing Sigg in Canada for 3 years and still have to justify most purchases.
    What we have learned about Sigg is that the enamel liner is flexible and does not crack.

    As for stainless, there are many different mixtures that can be very bad to use for food materials, how would you know where the metal was processed before it was made into the product your using?
    I use stainless coffee mugs, they have a different taste than a glass mug does.
    We sometimes forget the simple fact that plastic bottles suck for the reason that using them for any other substance than water remains indefinitely in the bottle, – eg. orange juice than water!

    What is in your liquids your drink?, common tap water can be just as bad as a what is leaching from products.
    I just like the fact I can put any liquid into the Sigg bottles and water still tastes neutral.

  6. austinv2006 April 17, 2008 at 7:29 pm

    richie what do you think is touching the soda inside of soft drink cans, oh yeah thats right aluminum and it has no enamel, so the water bottles are not as bad as you seem to think.

  7. raj March 9, 2008 at 4:15 pm

    The bottles are very safe and sharp looking. I got mine from I love it. I use it every day. There is not extra taste to the water and i also use for fizzy drinks.

  8. Robby December 10, 2007 at 12:31 am

    Any metal that comes into direct contact will eventually leach or migrate particles of that metal into said water. Whether that metal is aluminum or stainless steal. The most preferable type of water bottle would be made of a stainless steel outside and a glass inside.

    A stainless steel waterbottle without any buffer between the water and the metal would be the most damaging type of water bottle in concern to the consumers health.

  9. Kenny October 23, 2007 at 3:51 pm

    looking into eco friendly water bottles…preferably aluminum. please contact me to discuss.

  10. lime September 11, 2007 at 11:06 pm

    If you’re worried about the enamel and the virgin billet stock, then just buy a stainless bottle:

  11. bharat June 16, 2007 at 12:59 pm

    Well said.

  12. Todd May 11, 2007 at 12:38 pm

    I have a SIGG which I am really happy with. I have been refilling it for years which has saved countless plastic bottles (a material which can also impart molecules into the water I’m told).

    We should not discount how green “beautiful” can be. If you buy something and keep using it for a long time you are counteracting our disposable culture which is a bigger problem for the environment than any single product or material alone. To Richie and Zeek I would ad that few things are solved in one fell swoop. SIGG isn’t perfect (I wish they used recycled instead of virgin aluminum) but they are moving in the right direction. For those of us who design for big corporations we know all too well how hard it can be to get those companies to change direction. To be fair we should applaud SIGG but also encourage them to continue to evolve and improve. I say, put your energy where your mouth is and create a design that will help spread your message and your green values.

  13. Richie May 11, 2007 at 9:35 am

    Hey Zeek,

    TRYING is not good enough. If plastic coated aluminum works for you… try: ‘Tart Cherry Concentrate’ by Pure Planet . They seem to be using the same aluminum type container to house their concentrate. So the bottle would be free after the concentrate was used up.

  14. Zeek May 10, 2007 at 6:06 pm

    The enamel isn’t like on your stove. It acts like a form-fitting plastic-like coating inside the bottle. I’ve been using Sigg for years and my bottles are pretty banged up, with no chipping/loose fragments inside. Ever. As for the Alzheimers question, wait, what was the question again? Stainless without a coating tastes like water that’s been sitting in a hot Jerry Can all day, but I guess that’s a matter of personal preference.
    Also: Why does everyone have to hate on companies that are at least TRYING instead of paying lip service to all that greennwashing going on today? No one is ever doing enough in some folks eyes.

  15. Richie May 10, 2007 at 12:07 pm

    The stove top enamel thing on the inside is still questionable. If these aluminum/inner tretment bottles are dented, the inner treatment will crack, shatter and possibly then come loose in chunks. Stainless steel wouldn’t have this problem. While stainless steel would be more expensive a material, it’s higher cost might be offset by the inner stove top enamel treatment not being necessary ? Using aluminum to store water is not green. It’s not practical and it’s not safe. Some Alzheimer’s disease studiies have shown aluminum salts coming loose in foods and then lodging in the brain as a causitive factor. i believe that Aluminum salts cannot be flushed from the body. They just continue to build up and they somehow get stored in brain tissue. Aluminum is a very reactive metal. So if the inner lining cracks… that wouldn’t be good. So why not use a GREEN metal, namely stainless steel, and not have this issue ?

  16. anik May 10, 2007 at 10:10 am

    Pour défi de l’été?

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