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  • Comfort is a priority with the slide-adjustable chest strap that enhances fit and reduces bounce while running
  • Weight is balanced using a rear-focused storage design, offering comfort and ease of use along with versatility to store gear or additional fluids
  • Mesh shoulder straps wick away moisture for enhanced overall comfort
  • Comes with two 12 oz. insulated SpeedShot Flasks with Push-Pull Blast Valves for quick hydration
  • SpeedShot insulated 12 oz. Flasks designed with double-wall construction that keeps fluids cooler 20% longer than other insulated bottles
  • 1.5-liter bladder compatible (not included)
  • Expandable main zippered pocket allows easy access to your gear
  • Front stash pockets with hook-and-loop closure easily hold several energy gels or other small items
  • Large pill pockets on front for easy, quick access
  • Reflective trim for visibility in low light


View all Nathan Running Hydration Vests and Backpacks

REI membership


Best Use Running
Frame Type Frameless
BPA Free Yes
Gear Capacity (L) 7 liters
Gear Capacity (cu. in.) 427 cubic inches
Reservoir Capacity (fl. oz) 74
Number of Exterior Pockets 2 + main compartment
Material(s) 90% nylon/10% polyester
Bite Valve Shut-Off Switch Yes
Fits Chest 22 - 45 inches
Weight 13.3 ounces
Gender Unisex
Rated 5 out of 5 by from Great running companion I bought this for my first trail marathon, and it was a great companion. The accessible pockets on the front hold just enough and stay out of the way. It holds the water bottles great so that they don't bounce around. The phone pocket is located close enough to listen to music without disturbing people running a few feet away from you. It is super light by itself, and has enough room to carry a rain jacket, food, and the necessities.
Date published: 2016-05-10
Rated 4 out of 5 by from Great running vest I bought this within the last month, after running the American River 50. I felt my other pack was a little too heavy to attempt an ultra run. The has two 12 oz bottles with a spot on the back for a hydration pack. Note the hydration bladder does not come with vest. Which is a bummer. There are little pockets and it is light. It is easy to adjust. I wish the pockets could hold my cell phone. I coukd put it in the pack on the back, but I woukd rather have it closer to me.
Date published: 2016-06-29
Rated 5 out of 5 by from A minimalist hydration pack exactly as described I have a full-blown 100 oz unit for times when water is going to be and issue but it is really heavy to run with This unit has 2 12 oz bottles and just enough pack space to keep a light jacket which is perfect on long races were there is a regular supply of clean water
Date published: 2016-07-01
Rated 5 out of 5 by from Excellent little pack Bought this for trail running and it is great. Adjustable fit and it doesn't bounce around. Two flasks and the keep your H20 cold. highly recommend this
Date published: 2017-01-12
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Will the chest strap hold an iPhone 6S?

Asked by: Anfora
The chest pocket on the Fireball Hydration Vest will hold an iPhone 6s. It will not hold an iPhone 6+.
Answered by: REIservice
Date published: 2017-05-13
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