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. When drinking, first open the cover and turn the spout slightly to the right to unlock it. Squeeze down the mouth or finger to open the mouth to reveal the contents. When you finish drinking and release the mouth, the spout will automatically rise and close. You can open and close a series of operations with one hand. Turn left further from the unlock position to disassemble the interior for easy cleaning. The gasket is integrated into the cap, so there is no need to worry about losing it.