Plexus Waist Pack

(4 customer reviews)


The Plexus is a versatile waist pack with a larger capacity that gives you the option to customize your gear and hydration to your adventure. This pack has the capacity to carry any of our handheld or bottle styles in the front quick stash pocket or a 1 liter bladder in the main zippered compartment. Specifically placed compression allows the pack to function empty or fully loaded and provides a more comfortable and stable ride. Inside the main compartment there is a mesh expansion pocket to keep small items close to your body. The back of the main compartment features our XT Mesh which helps to wick and disperse moisture while preventing chafing. The bottom of the main compartment has been reinforced with a second layer of 30D fabric to strengthen the stress point, but also keep the pack lightweight. The front of this waist pack is also equipped with a functional 4-way stretch mesh pocket capable of carrying a large cell phone. In addition, it has two shock cords on the front attached to Hypalon fabric for strength that can carry Z-poles, jackets, or other apparel. One size fits most.

Available on backorder

SKU: UA080BG Category:


ErgoFit Waist

Recommended Use:
Racing and training; 1 hour between refueling stops.


• Dual-sided adjustment for good sizing range with single speed hook access for taking waist belt on and off.
• 4-way stretch mesh pocket is large enough for cell phone or energy foods with tuck away jacket straps perfect for extra clothing or Z-poles.
• Strategically placed compression allows for options in bottle size.
• No-slip breathable webbing allows for better heat dissipation.

Fit: Unisex
Size: Universal
Color options: Burgundy/Cherry Tomato
Hydration (not included): 1 Liter Reservoir, UltraFlask 550 Hybrid Bottle, 
Capacity: 244 c.i. (4 L)

Additional information

Weight .4 lbs
Dimensions 15 × 10 × 5 in

4 reviews for Plexus Waist Pack

  1. Elissa T Nyer (verified owner)

    Okay, so after completing my first 20 miler this spring, I knew I needed a different pack. I didn’t want something that would cover my entire back and I wanted more space to carry more than a gel or two. With the Plexus, I can carry a pbj, some gels, jelly beans, applesauce packs or some salted new potatoes. There is still room for me to carry the water bottle in the outer pocket and I can access it easily when I need a drink. I can see my only wish for this pack is that the water bottle be insulated. The pocket offers some insulation, but I can see myself freezing a partially filled water bottle and filling the remainder with water just to help keep me a bit cooler at the beginning of a long run this summer. The body of the Plexus seems to be made of durable fabric and the mesh around the waist will hopefully help to keep me a bit cooler as well. I’ve only worn it a few times so far, but have no signs of wear so far. I really really like it so far.

  2. Alexander Kappes (verified owner)

    Absolutely amazing waist pack. Coming from primarily using a vest or handheld, the waist pack provides the perfect middle in terms of carrying capacity. I actually haven’t used a vest since getting the Plexus. The front mesh pocket is perfect for keeping my cellphone and ready-to-grab energy, while the back storage provides enough space for more energy, mini water filter, headlamp, and shell jacket. The 550ml bottle fits perfectly in its carrying holster and does not bounce around. If you’re worried about not having enough water, you could even throw a bladder in the back storage, but carrying a small water filter alleviates this as long as you have water access. The pack rides perfectly – I often forget I have it on. I definitely appreciate the cooling effect of running with a waist pack opposed to a vest, and the fabric technology on this pack helps support heat dissipation. All in all, it’s great. I thought about it too long before actually purchasing it. Don’t make my mistake!

  3. Tyson Lee

    Great waist pack for short hikes and runs. It has become my go to during my shorter training endeavors. I love being able to carry up to 1 liter of fluid and still having space for my phone, emergency light and homemade gels.

  4. Rene Berry (verified owner)

    Great capacity on both compartments. and the ergonomic stability is pretty amazing. Not sure why they chose to use metal for the buckles as for me it detracts form the ability to just toss it in the washer and the added weight. The part that annoyed me the most and might be the reason this belt will not be used as much as I would like to is the two belt flaps that hang freely after cinching the belt there’s no loops to keep them from flapping around and hitting your arms when running.

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