This 1500ml Tritan bottle, in black/yellow, from iDrink, reference ID2131A, is a reusable bottle made of transparent copolyester. Tritan is a BPA-free, transparent, and virtually unbreakable copolyester that does not retain odors or stains and is resistant to both heat and cold, and is dishwasher safe. This is the larger capacity version of the same black/yellow pattern, also available in 1000ml. It is a preferred option for those who like this more vibrant contrast but need more volume than the 1000ml version.