Bullet EXCLUSIVE! USA-made, BPA-free sports bottle is made with Polyethylene (PET) material. 32-ounce bottle with ounce measurement markings. Includes removable Fill-n-Freeze chilling stick to keep your beverages cool. Simply fill the internal chilling stick with any liquid, twist on the lid, freeze & go. Twist-on, push-pull Mega Flow lid provides 6-ounces of liquid to pass with just one squeeze - twice the amount of a normal push-pull lid. Phthalate-free, Non-Toxic and Lead-free. Bottles ship assembled. Hand wash only. Follow any included care guidelines.