A protein shaker frees you to create an instant protein drink at work, at the gym, on the trail, at a campsite or in your car. An easy-to-clean protein shaker bottle provides a healthy way to mix protein drinks on-the-go. The shaker consists of a cup or bottle with tight-sealing lid, often with a drinking spout.
If you're wanting to start using protein powders then it's probably a good idea to buy a shaker to go with it. Unless you have an electric whisk or blender at home that you can use - and don't mind spending your life washing it up every day - you'll need a device to ensure everything is mixed together properly.