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      Product Specifications


      4L Capacity


      1 Vest

      Item #


      Style #


      US sales only.

      Nathan VaporKrar 4L 2.0 Vest

      Created in collaboration with champion ultra runner Rob Krar, the Nathan VaporKrar 4L 2.0 Vest is the new, improved version of a runner's favorite. This racing vest is compatible with a 1.5L bladder to keep you hydrated during longer events. Front stash pockets and a zippered water-resistant chest and back pockets offer security for on-the-go nutrition, a smartphones, and other essentials. A back kangaroo pocket is perfect for storing extra flasks, clothing items, or other small necessities. The internal CompressionFit system tightens the vest against the back for enhanced stability.

      • Super-breathable materials allow for maximum comfort.
      • Features two easy-access front bottle pockets.
      • Side stretch mesh pockets fit most smartphones.
      • Soft-touch, no-chafe elastic perimeter binding.
      • Reflectivity provides enhanced visibility.
      • Includes two 20oz soft flasks with extended tubes.


      X-Small: 30-32" chest

      Small:33-35" chest

      Medium: 36-38" chest

      Large: 39-41" chest

      XLarge: 42-44" chest

      *Measurements refer to body size, not garment size.