This $475 brain-fitness headband was designed to boost focus and cognitive endurance. I tested it to see if it's worth the hype.

You can boost your cardio output and improve your hand-eye coordination, agility and reflexes with Boxbollen. Use the boxing ...

Beyond dust and water resistance, the best workout headphones boast impact-resistant materials, such as durable plastic, high-grade silicone or rubber, and reinforced hinges and headbands.