Head out on your next training run ready to beat your old personal record with the Nike(R) Lean Running Arm Band. This lightweight yet durable arm band provides easy-to-use storage for your smartphone, so you can track your run or listen to music while on the go. A clear window ensures you can still use your touch screen when you're on the move, while an adjustable design means you have a comfortable fit mile after mile. FEATURES: Arm band provides convenient storage for phone or other device Compatible with most smart phones and designed with clear window Adjustable arm strap ensures a snug, personalized fit every time Pocket securely stores your phone while on a run Reflective Swoosh adds a safety element