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The Nathan Proton packs 2L of hydration and offers 100 inches³ pack capacity to carry accessories and apparel comfortably while still allowing full range of motion when you hit the roads or trail.


Pack Details

  • Includes 2 liter (70 oz) Hydration Bladder with unique Slideseal™ top closure
  • Provides liquid for about 2+ hours of exercise, depending upon individual hydration needs
  • 3-Way Propulsion Harness™ moves with your shoulders and upper torso: each shoulder strap moves independently preventing pak from swaying or riding up, provides freedom of movement
  • Rapid Access bladder pocket
  • Large, dimensional Power Stretch Mesh pocket on each shoulder strap
  • Honeycomb mesh shoulder straps and back panel add comfort, prevent chafing, and dissipate heat
  • Air Scoop with ventilation channel
  • Vertically adjustable sternum strap with drink tube clip
  • External zippered pocket
  • Reflective detail
  • 100 cubic inch capacity
  • Weight: 13 oz.

Bladder Details

  • Replaceable 2 liter Hydration Bladder
  • Unique Slideseal™ allows for easy filling, cleaning and drying
  • Durable Thermoplastic Polyurethane (TPU) construction
  • BPA and PVC free, will not taint water taste
  • Anti-Microbial additive helps keep bladder clean
  • Dishwasher safe bladder
  • Omnidirectional high flow bite valve
  • Durable, kink resistant drink tube
  • Fill scale helps you monitor fluid volume
  • Tube can be cut to desired length, simply remove the bite valve and cut with sharp scissors

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