The team Hellas On-Ear Wireless Bluetooth Headphones from Urbanears are sweat-friendly and cord-free headphones that feature a washable-mesh headband and ear cushions. The headphones can be used with smartphones and MP3 players, and they are designed with a built-in swipe interface that can be used for cycling through your playlist and picking up calls without hunting for buttons. In addition, they come with a built-in microphone on the earcup.