BLACK sports armband band case Compatible With iPhone 4 4G iPhone 4S - AT&T, Sprint, Version 16GB 32GB 64GB Armband is Compatible with upper arm circumference: 10 - 15 inches. Color: Black. Size: Perfect Fit. Adjustable Velcro Armband gives you the versatility of carrying your iPhone in a variety of ways. This durable, lightweight armband case keeps your iPhone secure and protected. Accessory only.