If a sports bra is already what you wear for running attire, why not make it carry your water for you? This covert design simply looks like you’re wearing a water bottle in the middle of your back and the holster is sewn into the back of the sports bra. Typically designed to hold medium to large sized bottles, the longer the bottle, the easier it will be to access it from behind you. Flexible and elastic, the carrier is designed like a normal sports bra and is one of the least cumbersome water carriers on the market.