No BPA, phthalates, lead, or other toxins Large opening (internal threads)accommodatesice cubes Made of 18/8, food-grade stainless steel (no liner needed) Electropolished interior does not retain or impart flavors Rounded corners are easy to clean with no hard angleswhere dirt, germs or bacteria can stick Dishwasher safe (h&-washingpainted bottles & bamboo cap is highly recommended) The Sport Cap 3.0 features a soft silicone spout, 25% higher flow rate & "chirp" free hydration.