SIGG’s classic bottles have been made of aluminum since 1908. These SIGG drinking bottles are all made in Switzerland under strict quality control. Each bottle is made from a single aluminum component, so the finished product has no seams that could leak. Aluminum is a very durable and light material. Thanks to SIGG’s patented and flexible EcoCare® inner coating, you can put not only water but also acidic drinks, juices and carbonated drinks in your SIGG bottle without any of the aluminum coming off your drink. This unique inner surface also does not collect odors or tastes and the bottle is easy to keep clean. This way your drink is always fresh and free of chemicals.