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(More customer reviews)Last month I bought a 40oz Klean Kanteen bottle and a 33oz Sigg bottle. In the end I prefer the Klean Kanteen.
Both bottles are very light and look good. The Sigg is lighter, but not so much to really matter. Sigg wins easily in the looks department with different artwork to choose from and the bottle I have has a nice textured powder coat finish compared to the KK basic look and smooth surface.
Sigg uses an epoxy to protect your water from the aluminum and tells you not to use the bottle for long term storage. Could be a bit worrisome not knowing what's in the epoxy and the possibility of aluminum contamination. I have not noticed a metallic taste from either bottle drinking straight unfiltered tap water. I prefer the stainless steel of the KK just because it's probably on the safer side.
The bottles are both lightweight and made of thin metal. I haven't dented either but I have been very careful with them. Both feel like they would dent quite easily. I have not scratched either bottle and the paint on both looks like new after daily use from work to the gym.
The KK bottle has the cap threading formed into the neck of the bottle while the Sigg uses a metal ring insert in the top of the bottle to thread the cap onto. Some people have complained that the Sigg's threaded insert is sharp, but I have not had this problem. The KK is more comfortable to drink from though. Also the wide mouth of the bottle makes it easy to put ice cubes in, which you can't do with the Sigg unless you have very small ice cubes.
I have the loop cap on both bottles. The Sigg I really have to twist the cap on tight so it doesn't leak. The KK cap seals quite easily and has never leaked. The KK also uses a thicker thread size and is easier to screw the cap onto because of this.
Some people are complaining about sweating. On a hot day with the bottles filled with ice cubes both will sweat, but plastic bottles will also.
If I was going to spend that much money on a water bottle again, I would go with Klean Kanteen without a second thought. The only advantage of the Siggs is the exterior design.
Update Dec 09: Over a year of use now and I have stopped using the Sigg due to their older bottles do in fact have BPA. Something they said it didn't have, so I won't buy another bottle from them again since it appears they were lying before. They will replace the older bottles, but you have to pay shipping.
I have 2 Klean Kanteens and both have held up well. Some minor scratches and dents, but still look quite good.
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Klean Kanteen Stainless Steel Water BottleKeep yourself hydrated with the reusable Klean Kanteen stainless steel water bottle, which now comes in a variety of colors. Klean Kanteens are made from #304 stainless steel, the material of choice in the food processing, dairy, and brewery industries. Stainless steel is easy to clean, durable, inert, sanitary, toxin-free, and non-leaching. It's also toxin- and BPA-free and 100 percent recyclable in most areas.
Klean Kanteen bottles do not have a chemical lining like some other metal bottles, and they won't ever leach a chemical taste into your drinks. The large-mouth design makes it easy to pour in ice cubes or a smoothie packed with frozen strawberries. It's also easy to clean--just scrub it out with white vinegar and baking soda (or mild soap and water), or load it in the dishwasher. It's topped by a polypropylene looped cap that makes it easy to grab on the go. All Klean Kanteens are backed by a 1-year manufacturer's warranty.
Klean Kanteen bottles come in several sizes:
12 Ounces The 12-ounce Klean Kanteen is designed for small hands, making it easy to hold, and you can order an optional specially designed adapter that works with Avent's patented sippy cup spout.
Capacity: 12 ounces (355 ml)
Weight: 4 ounces
Size: 5 x 2.75 inches (HxW, without cap)
Opening diameter: 1.75 inches
18 Ounces Grown-ups love the 18 ounce bottle for its compact, easy-to-carry, lightweight size that slips into bags, cup-holders, and even the water bottle cage on your bike.
Capacity: 18 ounces (532 ml)
Weight: 6 ounces
Size: 7 x 2.75 inches (HxW, without cap)
Opening diameter: 1.75 inches
27 Ounces Klean Kanteen's most popular size, 27 ounces is a perfect amount for juggling a full day of classes or work, kids' extracurricular schedules, a trip to the dog park, and more.
Capacity: 27 ounces (800 ml)
Weight: 8 ounces
Size: 10.55 x 2.75 inches (HxW, without cap)
Opening diameter: 1.75 inches
40 Ounces When 27 ounces isn't enough, you may need 40. The mother of all water bottles, the 40-ounce Klean Kanteen is great for long car trips, camping, a late-night session at the office, trips to the beach, or any time you need to carry a lot of liquid and don't have the option of easy refills.
Capacity: 40 ounces (1182 ml)
Weight: 11 ounces
Size: 10.625 by 3.5 inches (HxW, without cap)
Opening diameter: 1.75 inches
Frequently Asked Questions Why is the sports cap made of plastic and not stainless steel? Your teeth. Klean Kanteen chose polypropylene #5 because it has no known leaching characteristics and is softer if you hit a bump on the trail. If you'd rather avoid plastic altogether, a stainless steel screw-on lid is available as an accessory.
Can I put hot liquids in my Klean Kanteen? No. Klean Kanteen bottles are single walled and not for use with hot liquids. Warm beverages can be used at personal comfort level. The single-walled construction allows for more volume and the option to put your Kanteen on a flame.
Can I put my Kanteen in the freezer? We do not recommend it and it will void the one-year warranty against manufacturer defects.
Can I put my Kanteen on a stove? In a pinch, the Kanteen can be placed on fire or a stove. Beware not to melt the plastic lid or burn yourself.
What is stainless steel? Stainless steel is an iron-containing alloy made from some of the basic elements found on earth: iron ore, chromium, silicon, nickel, carbon, nitrogen, and manganese. Properties of the final alloy are tailored by varying amounts of these elements. There are more than 57 stainless steels recognized as standard alloys on the market. Klean Kanteens are constructed from high-quality, sanitary-grade 304 stainless steel which has a low nickel content. Stainless steel has excellent resistance to stain or rust due to its chromium content. Stainless steel is easy to clean, durable, inert and sanitary.
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