This 1500ml blue Tritan bottle from iDrink, reference ID2128A, 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, making it dishwasher safe. Blue is the only solid color available in this 1500ml capacity, the largest in this bottle range. It is a preferred option for those seeking the largest capacity in this range in a solid, neutral tone, rather than a two-tone pattern.