If you love the convenience of the N-Gen, you'll find even more to love in the BPA free Tritan N-Gen.  The Tritan material is still super strong, but without the danger of harmful chemicals.  It's highly resistant to staining and odors as well. 

The N-Gen bottle features a 53 mm opening, making it right between our current wide mouth and narrow mouth. The cap features a molded in loop, providing a convenient spot to clip or a nice finger loop for simple, comfortable carrying.  The cap also has a soft touch material for easy gripping  Graduations are molded right into the side of this 24 ounce (750 ml) bottle.