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- Sigg Hot & Cool Bottle - Screw Top - 16oz
A Question about Sigg Hot & Cool Bottle - Screw Top - 16oz
By leitinger2281229 on June 27, 2008
What material is the cap constructed of? Thanks
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Answer to "What material is the cap constructed of? Thanks"
By Matt Fuller 
on June 27, 2008
I believe the caps are made of polypropylene. Also be aware that it's not just a stainless steel bottle, but there is an enamel coating on the inside.
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