Griffin AeroSport XL Armband for iPod touch (4th generation) - Black. Our popular AeroSport armband, with a strap 50 millimeters longer, designed especially to fit larger arms. All-day comfort and a lightweight, one-piece construction make AeroSport the ultimate active-use armband for athletes of every stripe. We start with a lycra core for flexibility, light weight and amazing comfort. The band is cut wide to stay put comfortably without overtightening. Fit AeroSport to your arm, then slide your iPod touch into place. You have complete access to your Multi-Touch display and headphone jack, and your iPod is protected from fingerprints, dust and scratches. We've even included a hidden pocket to hold your house, room, or locker key.