750ml metal protein shaker bottle https://www.shdrinkware.com/product/stainless-steel-shaker-for-gym/750ml-metal-protein-shaker-bottle-bpa-free-stainless-steel-custom-logo-shaker-bottle-stainless-steel-shaker-for-gym.html Stainless steel shaker cup, a must-have for sports and outdoors, a special shaker cup for protein powder to provide you with positive energy for the day.