If you're making protein shakes daily, then a Blender Bottle is an absolute necessity. The Sundesa Blender Bottle basically consists of a plastic bottle and a steel ball, and that's all that's needed to make this baby whip up your shakes like a real blender would. In some cases, it's even better, because it's far easier to clean, it's portable and it takes less time to make shakes - it's been a terrific time saver for me in the mornings.

I own one, and I haven't experienced any leakage, plus it fits perfectly in the cup holder of my car. This is a real winner! Purchase the Sundesa Blender Bottle on Amazon.com for $7.75 (28 ounce). There's also a Mini 20 ounce Sundesa Blender Bottle at Amazon for $7.50.