USAW Blender Bottle - The USAW Blender Bottle is integrated with the StayOpen flip cap, the adjustable carry loop lets you hold more when your hands are full and offers a convenient place to attach keys while at the gym. The Classic's screw-on lid and secure flip cap keep your gym bag and car seat dry. With a snug twist of the lid and the assuring snap of the flip cap, you are ready to roll. Made from only the highest-quality materials, BlenderBottle® brand shaker cups are and always have been BPA and Phthalate free. Everything else is just a shaker cup. The BlenderBottle® Classic revolutionized the industry back in 2004 with its leak-proof seal, iconic design, and the BlenderBall® wire whisk.