The new and improved official BioSteel Shaker Cup by BlenderBottle features the BlenderBall wire whisk, rounded base for better mixing, pro-level SpoutGuard to keep germs off the drinking surface, and an upgraded, modern design. With a 28oz capacity, it’s easier than ever to make —and take— Biosteel's Hydration Mix on the go.

• 28oz: 3.8" x 3.8" x 8.9"
• Rounded base for better mixing
• SpoutGuard™ keeps your drinking spout clean
• Measurement markings
• Dishwasher safe
• BPA and phthalate-free
• Patented mixing system