The 32oz team bottle is our largest volume bottle. The bottle's construction is made from BPA-free plastic that's 100% FDA food-grade approved. It's easy-to-squeeze and absolutely leak-proof. Our Fixy cap is the easiest cap to use on the market. Period. No push or pull of the mouthpiece is required to open and close it. Plus, the integrated Heart Valve™ provides incredible flow and a leak-proof design.