Meet the Runtimate Running Belt and Armband: magnetic tools that let you carry your things around with confidence. These are waterproof and come with multiple magnets, each capable of holding 8.8 lbs. The belt has 6 magnets while the armband has 2. The Runtimate magnetic running belt holds your things even when you are bouncing around and pushing yourself hard.
The above video shows what you get. More information is available on Kickstarter.