Travel friendly, you can not only use it at home, but also at outdoor Bracelet shape design, you can use it as a bracelet decor when you do not use it. Built for real life: The Tread is fully adjustable to fit your wrist. Simply add or remove links in quarter-inch and half-inch increments to fit. Always on hand: Wear your Tread everywhere so you're always ready. It’s a collection of interchangeable links, each designed to offer a variety of tools that allow you to solve everyday problems or respond to more critical situations.