New, unused item. LAVA SUKALA Wide Aluminum Bottle It seems aluminum bottles are suitable for hydrogen water to prevent the hydrogen from escaping. I have another one I'm using, so I'm letting this one go. Besides using it for yoga, it has a cute design for everyday use. This is a series that retails for 7,700 yen. - Brand: SIGG - Model Name: Sukala - Capacity: 1.0L - Color: Dot (Purple x White) - Material: 100% Recycled Bottle