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      Product Specifications


      4L Capacity


      1 Vest

      Item #


      Style #


      US sales only.

      Item is returnable, but does not qualify for free returns.

      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.