Price: $


Model Number:

The Osprey Rev 1.5 pack is lightweight and low-profile to keep you moving quick on the trail with a 1.5L hydration reservoir and storage for all your essentials. Featuring a unique fit system that works in-tandem with the Osprey reservoir, this pack fits close and minimizes bounce even when fully loaded. Rear pockets and an external bungee store lightweight apparel; several front pockets stash nutrition, essentials and a smartphone or camera.


  • Flash Green (738)

Sizes, Volume and Weight

14" 15"
Pack Volume
1L (61 in³) 1.5L (92 in³)
17oz (490g) 18oz (510g)

*Based upon t-shirt size; click here for How to Fit Rev Series
**Torso length of pack in inches
***Pack weight with empty bladder

Vest Details

  • Osprey 1.5L Hydraulics LT Reservoir included
  • Insulated zipper bladder pocket with easy access for re-filling
  • Hydration tube guides allow tube to be run over or under arm on either left or right side
  • Magnetic clip helps keep tube in-place
  • Biostretch™ Body Wrap Harness with breathable mesh distributes load to prevent bounce and enhances comfort
  • 2 side cinch straps to adjust fit on-the-run; helps maintain stability
  • Dual sliding front sternum straps to adjust fit and secure load
  • Breathable mesh reverse spacer mesh backpanel for comfort; helps move moisture away from skin and prevents irritation
  • Rear large zipper pocket with built-in harness for reservoir and lightweight apparel
  • Medium left-side rear pocket for headlamp, small accessories and valuables; includes key fob
  • Rear exterior bungee to stash lightweight apparel or warmers
  • 3 front stretch open mesh pockets for nutrition or small accessories
  • Front Digiflip™ Media Pocket for phone (fits iPhone 4 and 5 with case) allows you to access touchscreen without removing phone, flips down for viewing from right shoulder strap (removable)
  • Reflective details increase visibility in low-light conditions


  • 70D x 70D three line ripstop nylon / 70D x 160D dobby

Reservoir Details

  • Osprey 1.5L Hydraulics LT Reservoir
  • 3/4 turn cap for easy filling and cleaning
  • High flow bite valve with 180 degree on/off position
  • Magnet retrofit sternum strap for use with most packs
  • QuickConnect button for quick disconnect of tube from bladder
  • Welded chevron baffles to prevent sloshing and help maintain shape
  • Flexible 1/4" hose for fast water flow
  • Tube can be cut to desired length; simply remove hose connector piece, cut with sharp scissors and replace hose connector
  • Fill scale helps you monitor fluid volume
  • Anti-Microbial formula to prevent bacteria and mold
  • Metalocene PE high strength and taste free film
  • BPA & PVC free

More From Running Hydration Backpacks & Vests

Customer Reviews

Comments: There are MULTIPLE reasons people should be considering this pack over any other. 1. Price 2. Comfort (stretch straps) 3. Adjustability 4. Durability That said, I have used this pack in multiple situations (easily over 100 miles of use), but I will use the most extreme as any example. In June, I had completed the Manitou's Revenge course in the Catskill Mountains using this pack. During the entire time I had this pack on (20+ hours), there was no chafing, rubbing, etc. I was not wanting to remove the pack because it has just enough elastic in the chest straps to allow you to breathe comfortably. On the other hand, I have used packs that are significantly lighter than this and they have zero stretch in the chest and I could not wait to get those things off of me. At aid stations, the quick disconnect feature at the TOP of the bladder makes it much easier to pull out the bladder and hand to a volunteer for refill while you fuel up. But after a while, I didn't even bother removing the bladder. It can easily be filled while in the pack. The digiflip feature is also good to carry items like maps that you may need instead of a phone (waterproof casing). For those who carry a phone, it does fit the Samsung S5 without a problem and it is easy to access while on the run. The outer stretch pocket also fits the phone comfortably in case you want to have it accessible to take pictures as well. Osprey has been making packs for a number of years and it shows it with the construction of the Rev 1.5.
From: Anonymous. July 31st 2015

Comments: I have had the pack for a couple of months now. It is lightweight, comfortable, and functional. It took a couple of runs to get fitted properly and now I notice no bouncing or other movement. Helpful to turn upside down and suck all the air out prior to using which results in minimal sloshing during the run. I am 6'3" and 180#. I bought the M/L. Favorite features are the detachable hose for easy cleaning and refilling as well as the media pocket which comes in handy for changing music. The lid to the bladder took a little practice to get good at putting on properly but now is a cinch with no leaking. Highly recommended for the price.
From: Rod, WA, USA. February 26th 2015

Comments: Awesome pack - my favorite among the ones I own. 5' 10", 39" chest. Went with the smaller one and it fits perfectly without bouncing or chafing. Bladder is fairly easy to fill although care needs to be taken with the lid, as it doesn't always screw on right at first. Osprey valve is better then the others (comparing it to CamelBak, UltrAspire, and Nathan) and allows for decent water flow. Taken the pack to over 50 miles once (with water refills of course) with no issues. Not a lot of storage but that's where the larger version (Rev 6) comes in....
From: Bernie, Round Rock, TX, USA. May 3rd 2014