The Nike Slim Waist Pack 3.0 offers convenient, secure storage for your run. It's designed to adapt to your movements without bouncing around so you can maintain your focus. In addition it comes with a large reflex around the zipper to make you visible in low-light conditions.
I was skeptical at first about whether it would bounce excessively or not, but those worries were unfounded. They hold my phone and my keys and stay tight to my body when I'm running. I even use it as a mini sling bag for quick errands! really versatile product.