Convert your ski or snowboard helmet into your own personal auditorium with these low-profile helmet speakers. They're not headphones: headphones don't let in ambient noise, which can be a hazard on the hill. Instead, these let in just enough noise to keep you in the know as your shred. Compatible with all helmets featuring an audio drop-in system. Plug them into your MP3 device and you're set. Sweat and water resistant, they work in temperatures as low as -20°C.