The new and improved Classic shaker gives our tried and true bottle an impressive overhaul with performance-focused innovation and modern style. Say goodbye to lumpy protein shakes. Our powerful mixing system uses the BlenderBall wire whisk – found only in BlenderBottle brand shakers – to deliver smooth protein and nutrition shakes with ease. The Classic shaker sports an updated lid featuring a more ergonomic carry loop and Spout Guard to keep dirty gym fingers off the drinking surface. Forgot to add liquid first No sweat. The rounded base allows the BlenderBall whisk to mix every last bit of powder. Integrated with the Stay Open 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.