The ergonomic design of this hand held water bottle, the Nathan VaporShot Water Bottle, contours to your hand so you have the best grip on this water bottle. A feather light construction on this water bottle system – the entirety weighs in at 3 oz unfilled – makes this bottle system feel like vapor in your hand. The mesh design and over the hand cinch strap secures this bottle to your hand for the duration of your run and will keep your hand from overheating. Reflective details on this water carrier will keep you safe if you are training in low light conditions. For a truly lightweight water system, use this carrier for your next run.