Sonic IQ Sport Armband Sportband for iPad Touch, iPhone 4, 4S, 4G, 3GS (Black) running, gym, workouts, fitness, cycling, outside activities, or gym. Sonic IQ Durable Lightweight Sport Armband. ideal for walking, running, biking, gym use, and more. for use with iPhone 4, 4S, 4G, 3GS, and iPod Touch. armband fits arm circumference 10-15 inches in size. Built-in Secure Key Pocket.