Built with a mesh pocket to hold your iPod Nano, the Nike Performance Hatphone ($55) offers protection during winter training while jamming to your favorite tunes. This skullcap features built-in headphones that easily adjusts to fit over your ears and power mash windows that allows access to the controls. Lined with Nike's Therma-FIT fabric, the microfiber fleece Hatphone will keep your noggin warm while wicking away sweat and keeping your face salt-free during your run.