Balance Shaker 700mlBalance Shaker 700ml About Vitamins. co. nz Balance Shaker 700ml Balance Protein Shaker holds 700ml and is made from BPA free plastic. It comes with a mixing ball to ensure a smooth consistancy every time. Tough enough to handle knocks on the training field, this Balance shaker is perfect for mixing up your favourite Balance Protein shake. Handy for those on the go, chuck it in your bag and knock it back before training.