The Pro Series innovative leak-proof lid is engineered to to be leak-proof. Just push down on the flip cap until it makes a distinctive snap, then shake or stash the bottle with complete confidence that it is securely closed. When opening the cap, the SpoutGuard protects the drinking surface from grimy gym fingers. An extra-wide carry loop makes it easy to take shakes to go. Enjoy today’s smoothie without tasting last week’s protein shake. Stain- and odor-resistant Eastman Tritan is a medical-grade plastic known for extreme durability, quality, and clarity. And, like the materials in all BlenderBottle brand shaker cups, it’s BPA- and phthalate-free. The Pro Series' rounded base ensures that the BlenderBall wire whisk reaches every last bit of powder—guaranteeing the smoothest possible shake. The bottle’s sleek-yet-substantial design fits most car and gym equipment cup holders. The BlenderBottle Pro Series Shaker Bottles are built off the tried-and-true design of the iconic BlenderBottle Classic, with the addition of pro-grade features that make it easy to maintain proper nutrition and hydration on-the-go. Manufactured from BPA and phthalate-free Eastman Tritan, a durable and odor-free plastic that guards against lingering flavors, it keeps today’s smoothie from tasting like last week’s protein shake. Bottle contents and liquids are securely contained by a tightly threaded screw-on lid that creates a leakproof seal, and an ergonomic flip cap that snaps securely shut for shaking and transportation (fits in most cupholders). A SpoutGuard makes it possible to open the flip top without touching the drinking spout, so gym germs don’t find their way into healthy bodies. The patented mixing system—with a 316 surgical-grade stainless steel BlenderBall wire whisk that moves inside the bottle to smooth out mixes—makes it ideal for protein shakes, smoothies, fiber drinks, and meal replacements. A wide mouth makes it easy to add ingredients, and a rounded base ensures thorough mixing and easy cleanup. Embossed markings show both ounces and milliliters for easy measuring anywhere. The BlenderBottle Pro Series Shaker Bottle can also be used as a water bottle. Available in three sizes: 24-Ounce (measurements go to 18 ounces), 28-Ounce (measurements go to 20 ounces); 32-Ounce (measurements go to 26 ounces). Dishwasher safe. Manufacturer’s limited lifetime warranty.