KingCase iPhone 3g & 3GS Armband - Black on Black Armband is compatible with upper arm circumference: 12 - 17 inches Designed Exclusively for iPhone 3G & 3GS Secure Strap Provides a Snug Fit Around Your Arm - Made of Water Resistant & Hand-Washable Material Protects your iPhone while allowing easy access with the clear cover Great for working out or even just walking around! Lifetime Replacement Guarantee