The absolute classic for on the go and in the most classic of all models Pure, brushed aluminum. A stylish companion for all journeys, whether its on the trail or off to the office! The high quality, recyclable aluminum bottle is extremely light, robust and can be conveniently carried with one finger. It is 100% leak proof. even with carbonated drinks and upside down, whenever you need both hands free. The material is free from harmful chemicals, such as estrogen mimicking substances and phthalates for safer and easy drinking enjoyment.