product 1.Push Limits. get you going and keep you moving, it will make you have an incredible experience while you exercise 2.Dual Mixing Design: Each bottle comes with its own whisk and mix ball to make protein mixing as efficient as possible. It makes the mixing process incredibly easy and improves the flavor of the shake, perfect for your favorite drinks, protein shakes, smoothies or anything you want 3.Dishwasher Safe: Once shaken, stirred, and completely consumed, simply place the bottle in the dishwasher for an easy and effortless clean. We recommend hand washing the lid to increase longevity of the bottle and keep it at its best 4.Rust-proof and Easy Clean Mix Ball: Unlike most metal ball, our ball is made from top quality plastic material which is rust proof, never chip or peel. It is safe to leave the ball inside the bottle while you are enjoying the drinks, and you can wash it in your dishwasher without worrying about damaging it 5. BPA Free u0026 Storage Compartment: Our bottles are made from Toxin Free material that is safe to your body and environmentally friendly. including your favorite snacks, supplements as well as your vitamin and supplement tablets