Circuit Vest™ 50oz

Run Our most popular running vest now lighter and more comfortable
CamelBak Circuit Vest� 50oz is rated 4.4 out of 5 by 9.
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Nautical Blue/Black



Our most popular running vest is now lighter and more comfortable! Updated for 2019, the Circuit™ Vest includes a 1.5-liter CRUX reservoir that delivers 20% more water per sip and is lighter weight for additional comfort. With a more streamlined dual sternum strap adjustment system, that also has integrated reflectivity, and a new 3D Micro Mesh, the Circuit is lighter, more comfortable and better ventilated. The secure zippered pocket fits most smartphones and the open front harness pockets are specifically designed for Quick Stow™ flasks should you need additional hydration. A one-size-fits-most design means you can use it for a variety of activities and thanks to the side compression being highly adjustable it ensures a stable fit over any terrain.


  • 3D Micro Mesh: Multi-directional air flow and cushioning to maximize comfort and breathability
  • Secure Phone Pocket: Conveniently located with a zipper closure for secured quick access
  • Tube Trap: Keeps your drink tube secure and easily accessible
  • Dual Adjustable Sternum Straps: Offer a range of adjustments for a custom fit and increased stability
  • Fuel and Gear Storage: Organize run essentials with pockets specifically designed for Quick Stow flasks
  • Reflectivity: For early morning or late-night runs
  • Ultra Light Materials: Unrivaled breathability, comfort and durability


  • Collection: Running
  • Activity: Run
  • User: Men
  • Hydration Capacity: 1.5L/50 oz
  • Hydration Type: CRUX™ Reservoir with Quicklink™ System
  • BPA/BPS/BPF Free: Yes
  • Quick Link Disconnect: Yes
  • Gear Capacity: 3.5L/210 cu in
  • Pack Weight: 160g/5 oz
  • Dimensions: 35 x 19 x 9.5 cm / 13.8 x 7.5 x 3.7 in
  • Fits torso: Fits a chest size of 71-127 cm/28-50 in
  • Number of exterior pockets: 5
Rated 5 out of 5 by from Super comfortable!! Just used for the first time ..14 mile run..Absolutely love it!!!The fit is incredible with no rubbing irritations of any kind.Couldn't be any lighter yet very sturdy in holding a full load of h2o along with a 16 oz container of gatorade.Just the right amount of pockets for gels,keys,phone etc.Thank you Camelbak!!!!
Date published: 2019-05-24
Rated 5 out of 5 by from Running made simple! I love to run, but hate to carry a water bottle, phone and keys. The Circuit Vest, has made life simple. I can carry 50 oz of water, keys and phone and have nothing in my pockets. No slosh, no bounce (I am a big guy 6'2" 260) and the thing fits like a glove, run 10 or so mile at a time and no chaffing... 10 runs in with it and I wish i would have pulled the trigger sooner!
Date published: 2019-10-24
Rated 4 out of 5 by from Comfortable, can't tell its there I bought this last month and have used it quite a few times now. It is comfortable though my only complaint is the tube kinks 2 out of 3 times i try to use it. Today's run was a breakthrough with the tube though! I didn't feed it through the loop on the shoulder and i wiggled the tube up and down before drinking and it worked every time! Hopefully this can help someone having the same troubles i had. Overall i would recommend this camelbak for the comfortably and price. Just be prepared water may not come out, just wiggle the tube and you'll be good!
Date published: 2020-04-11
Rated 4 out of 5 by from Quite good but not great enough for 5 stars I bought this to use instead of my Camelbak Fourteener for hikes and trail runs where I don't need a lot of storage capacity but still want a decent amount of hydration capacity. While this product is quite capable of that task it's not quite perfect yet. I find the bladder very difficult to get in and out of the vest and the attachment on the harness for the tube and bit valve to be too tight to easily get it in and out of. I have not had this issue on my Fourteener so seems like a bit of a design issue. I also wish it had just a bit more storage and the straps were a bit more substantial. Overall I am happy with it and would recommend but with just a few minor improvements it certainly could be a 5 star product.
Date published: 2020-08-13
Rated 5 out of 5 by from TRAINING FOR NYC Absolutely love. the best camelback ive ever owned
Date published: 2019-09-16
Rated 2 out of 5 by from Leaked the first time used. I love the vest but the bladder leaked. The lid does not properly seal and water escapes the bladder through the twist lid. I couldn't possibly have filled or closed it improperly. I bought this one to replace the last 50oz bladder I had that leaked. I don't know what to do at this point.
Date published: 2020-10-11
Rated 5 out of 5 by from My new favorite hydration for running I have had many hydration belts over the years, from various manufacturers and various styles. I've learned that I prefer a center of gravity for balance and that I hate bounce. Before buying the Circuit Vest, I had tried using my old Camelbak that I ski with (can't recall the model, it's over 10yrs old). Needless to say, I was impressed by the lightweight feel and dimensions of the Circuit. I am working on the "bounce & slosh" factor of the reservoir, which is noticeable but not really bad. I've only run as long as 10 miles so far here in Chicago, but I have confidence the Circuit will provide me with needed hydration on my 13.1 to 26.2 training runs across the city...not that I'm going to be training formally for any marathons in this time of the corona, but I love to run long anyway.
Date published: 2020-05-13
Rated 5 out of 5 by from Great for long runs I was looking for a vest to use during my long runs in preparation for a marathon. I found this vest to be perfect for what I needed. It is comfortable, the fit is snug so I don't feel it moving when I run, has enough storage space for my phone and energy gels, and the bladder doesn't leak.
Date published: 2020-07-07
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