DLO - Philips Silicone Case (Jam Jacket) with Adjustable Armband for iPod Nano 4G (Black/Gray), DLA64012/17 The DLO - Philips Jam Jacket is the perfect solution for the active iPod Nano owner. The fully adjustable armband keeps iPod close and secure while you sweat. Jam Jacket Trek's durable construction and raised tread means your iPod nano is ready for adventure. Thick silicone helps protect against shock, while the raised tread adds both grip and style  because your active lifestyle demands nothing less. The protective silicone surrounds your iPod nano while still allowing seamless, play-through control. And with access to the dock connector, you can sync and charge while protected inside the case. DLO (Digital Lifestyle Outfitters) is a brand of the Philips Electronics N.A., the health consumer lifestyle and electronics conglomerate.