This sturdy shaker comes with Steadfast Nutrition trust component, that is the assurance of best quality products. The plastic used is grade 5 making it BPA free, durable and easy to carry. The very cool anti-leak bottle is perfect for running, jogging, camping, yoga, gym and other outdoor sports. It comes with a handy flip flop cap that makes it easy to open and close. The strainer ensures a smooth shake with no powder lumps and accurate quantity measurement with the engraved volume markings.