Sigg makes several styles of reusable bottles, but all Sigg bottles are made of aluminum, with the caps made of polypropylene and a rubber seal. The Sigg company says any beverage suitable for human consumption can be put in their bottles. Hot beverages, however, are not recommended because the aluminum will conduct heat.

On the Other: You May Want to Use the Bottle for Something Else

Some wine drinkers report a metallic taste when drinking wine from aluminum. This may be purely psychological, but it can spoil the experience for some people. Also, Sigg bottles are often used by hikers and backpackers, who may want to use their drinking bottles for something more thirst-quenching and helpful on a long hike, like water or sports drinks.

Bottom Line

There is no health reason why you can't use your Sigg bottle for wine. There are no harmful side effects from drinking wine from aluminum bottles, and the Sigg company claims any moderately cool liquid can be put in them. However, for some, drinking wine out of a metal can or bottle results in a metallic taste, even though this may be psychological. It might also be advisable to carry along a more necessary beverage if you are on a long or difficult trek.

Source:

Sigg: FAQ

Chowhound: Wine in Aluminum Pop-top Cans? Why Not?