Heading out for a new biking challenge, keep your beverage or water in this gradient bottle. It is made from aluminum and is colored with the light to dark gradient technique. This aluminum bottle features a screw on, spill-resistant lid for protection of its contents. This item is BPA free, is F-D-A approved and can be easily attached to backpacks with its split ring attachment. There are several available colors for this item with each item looking just as good as the next.