Now the only question is: what are you supposed to do with your keys, credit card, phone, and water bottle? This convenient piece of gear comes in different varieties (sizes, features, functions), but each is meant to carry the essentials you may need during a run. They are designed to sit flat and securely around your waist to minimize bouncing or riding up while on the move. They come in a range of sizes depending on your needs and are usually equipped with a variety of compartments to hold your belongings. Hipster Waist Belt, nathansports.com ($6.99) Classic Running Belt, FlipBelt ($34) Duro Solo Running Hydration Waistbelt, amazon.com ($40) Flash Belt, camelbak.com ($40) Nine Trails Waist Pack, rei.com ($76.16)