Hot check nylon, far-from discreet dualtex, and dependable 600d polyester combine to create this pumped up piece. This pack keeps you connected to your iPod or MP3 player with its 3-button, ElekTex Smart Fabric control conveniently located on the mono-strap. Turn volume up or down simply by touching the control on the strap. Plug in your headset of choice via the universal headphone jack, also on the strap, and tune in!