Simply ECOLOGICAL "Have your My Bottle! SIGG is the pioneer of aluminum bottles, and since the first generation of aluminum has been making a variety of bottles that meet the needs of the times. The consistent spirit of creating products of the highest quality is still inherited by the time that styles and designs evolve. ● The interior has a special coating that does not affect the taste of your drink, and it has an odor resistant coating. This coating is a human and eco-friendly coating that does not contain chemicals such as BPA and Phthalates. No need to worry about cracking or peeling off the coating if dents occur on the main unit. The SIGG bottle can hold any beverage, such as tea, sports drinks, fruit juice, etc. Simple and easy to use screw-type cap. To drink, remove the cap and place the mouth directly on the bottle to drink. If you have weak fingers strength, you can easily open and close the leverage by inserting a hard rod or something into the center hole and turning it. The gasket and cap are integrated so you don't have to worry about losing it. The SIGG cap is sealed to ensure that even carbonated beverages gas will not escape.