Drop it in. Shake it up. Enjoy! Blender Bottle products have always been BPA free. The best mixer since the wire whisk. Congratulations. You own the best! Gourmet cooks have relied on the wire whisk for hundreds of years to blend their ingredients into a smooth and light consistency. Now you can do the same with the Blender Bottle. It's perfect for mixing everything from creamy smooth nutrition shakes to salad dressings, marinades, and fluffy omelets. It also makes a great water bottle. No ordinary bottle. BlenderBall mixer inside. Easy-grip design. Ounce and milliliter markings. StayOpen flip top. Easy to clean. Dishwasher safe. Large drink/pour spout. Secure screw-on lid. Wide opening for ingredients. Fits in most car drink holders. No electricity or batteries required. Patented. BPA free! Uses no electricity or batteries. Secure screw-on lid. Easy-grip design. Patented. Made in China.