Plexus 2.0 Waist Pack

(5 customer reviews)


The Plexus 2.0 is a 4 liter low profile waist pack designed to carry a variety of contents securely. The back portion of the Plexus 20 features a horizontal bottle pocket that includes an UltraFlask 550 Hybrid Bottle. The compartment is fully insulated and can be accessed with the left or right hand. Foam has been added to ensure you never feel the contents of the pocket on the lower back. 4-way stretch mesh prevents the bottle from inadvertently launching. Dual forward pull adjustments make getting the perfect fit a breeze and the breathable webbing allows sweat to escape for zero chafing. The front portion of the plexus 2.0 has seen a capacity increase which keeps the load balanced and the profile low across the entirety of the pack. For webbing management, the front floating pocket has room to tuck any excess away. The conical shape which appears on all UltrAspire waist pack products has been refined through 30 years of development to ensure a comfortable and non-slip fit. One size fits most.

SKU: UA207LN 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 for load control
• No-slip breathable webbing allows for better heat dissipation.

Fit: Unisex
Size: Universal
Color options: Lagoon/Navy
Hydration: 1x UltraFlask Hybrid Bottle 
Capacity: 244 c.i. (4 L)

Additional information

Weight .4 lbs
Dimensions 15 × 10 × 5 in

5 reviews for Plexus 2.0 Waist Pack

  1. kcameron724 (verified owner)

    Holds a ton of stuff, and the sideways bottle is easier to grab compared to the synaptic or Speedgoat

  2. drvosti

    I went on my first run with it today and was suprised how comfortable it was and that there wasn’t much bouncing even during my drills with a full 550ml bottle. I wasn’t convinced that the front pocket would work with the tie down but it secured my phone and keys without a lot of shaking. It took me a second to figure out how to use the front compression strap. It work but is tricky to get loose and tighten. It’s comforable and I’ll be trying it on multiple hour runs

  3. Kim

    Love this waist pack! Doesn’t bounce at all, I dont even notice it’s there. Plenty of room for phone and snacks. The compression strap works but it is not the easiest to loosen. Small issue compared to comfort.

  4. Dominic

    I wanted to love this pack but unfortunately the front pocket is too big, soft and unstructured. You can’t put anything in it without uncontrollable bouncing and sagging, unless it’s very light like gloves, rain jacket, handkerchief. The bungee can be tightened to alleviate this but then it blocks the zipper and you have this long dangling bungee cord in between the legs/groin area. I find nowhere to put a smartphone without causing discomfort.

  5. Chris R

    This belt is (almost) perfect and ideal for racing. The water bottle is easy to pull out and has a large opening making it easy to fill up at aid stations. The front storage pocket is the perfect size and can fit large cell phones and plenty of snacks. I love that the back padding can also protect the phone from compressing against my body, and the cinch system works great to tighten the pocket down. My only grip is the strap system, specifically the little plastic loops to hold down the straps. It seemed like an odd choice, since they don’t confirm to your body and can move around. Why not add some Velcro spots to the back of the strap or something? I plan on seeing some Velcro straps to cinch down the extra straps and removing these plastic bits

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