Wearables have suffered from excessively positive and negative hype. Currently, the wearables market consists of disparate devices solving a variety of problems and entering the market through a variety of paths. Forrester believes that wearables offer marketers a wide array of tools for creating deeper engagement with customers. In this report, we specify five foundational truths about the future of wearables that all CMOs need to know and tell CMOs how to take advantage of this disruptive technology revolution in their marketing efforts in 2016 and beyond. This is an update to a previously published report; Forrester reviews and revises it periodically for continued relevance and accuracy.