Slim 28-oz Odor-resistant BPA-Free Shaker Sport Mixer Bottle With Blending Ball Inside and Leak Proof Secure Top (Black/Black) Stylish slim leak proof secure design shaker bottle Odor-resistant BPA-free durable Tritan copolyester plastic Measuring chart to check the volume of liquid in the bottle Rubber coating on both the lid and the body offers a firm hold Perfect for water, flavored drink mixes, protein powders, smoothies & more