NWT Unisex Black Diamond Distance 4 Hydration Vest Ultra Blue Large. Stitch-less Edge Taping Technology for superior comfort movement and weight reduction. Features: - Innovative harness layout with soft, flexible edge binding provides comfort on the move - On-the-go Z-Pole storage - High stretch side panels add comfort and keep vest bounce to a minimum - Front zip pocket with a key clip and removable micro race whistle - Back zip security pocket and lumbar pocket Comes with two water bottles. New with tags - there's still plastic covering the mouths of the bottles. Size large but is adjustable.