Holdings: Most of smartphones, passport, keys, credit cards, money, energy gels. Ear bud hole is for pleasant music in running. It is great for all forms of exercise including walking, running, hiking, riding bikes, working out at the gym and more. WATER RESISTANT(sweat-proof and rain-proof): Keep your valuables dry while you are doing exercise (not fully waterproof), not exposure to a lot of water or rain for long time. 3M reflective stripes on the front pocket is special for triathlons, marathons,