SKU: 5713486855

ULTRASPIRE - Zygos 5.0 Hydration Pack

Sale price$409.19 Regular price$454.65
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

ULTRASPIRE - Zygos 5.0 Hydration PackDESCRIPTION: Since the first iteration of the Zygos, tens of thousands of runners have utilized this high capacity 14 liter race vest. The lightweight and comfortable wrap around design complimented by the ErgoFit Harness ensures the Zygos 5. 0 will be stable, comfortable, and hindrance free. The packs MaxO2 Form adjustable closure system secures and adapts to the packs load. This innovative system can conform the pack to the body using a single pull.

DESCRIPTION:

Since the first iteration of the Zygos, tens of thousands of runners have utilized this high-capacity 14-liter race vest. The lightweight and comfortable wrap-around design complimented by the ErgoFit Harness ensures the Zygos 5.0 will be stable, comfortable, and hindrance free. The pack’s MaxO2 Form adjustable closure system secures and adapts to the pack’s load. This innovative system can conform the pack to the body using a single pull. Similar to the MaxO2 Sternum, this system allows the pack to remain secured without impeding natural breathing. Featuring 8 on-the-go pockets there are 2 zippered shoulder pockets, a dual 4-way stretch mesh pocket, a pair of stretch mesh pockets (one of which is zippered and suitable for carrying a large cell phone), a zippered side pocket, and a magnetically closed side pocket. The main back compartment has been reinforced at the stress points with XT fabric which contains stronger than steel ripstop fibers. This pack includes a 2-liter reservoir that fits into the removable insulated bladder compartment. Available in 3 sizes to ensure a perfect fit.

DETAILS:

  • Lightweight, soft, breathable, but strong, large-holed mesh pulls moisture away from the body to keep skin dry and cool.
  • Silicone and PU-coated feather-weight nylon fabrics resist water, abrasion, and tears.
  • Max O2 Form™ for unrestricted breathing while maintaining a stable pack. Uses a shock cord with good stretch for unrestricted breathing but also a good rebound on the stretch for a stable ride. Patent Pending.
  • Plush feeling micro-fiber polyester edges, soft and non-abrasive against skin and clothing.
  • Sweat-proof webbing—won’t absorb water or get saturated and heavy.
  • Safety stitched bar tack on all stress points.
  • Quiet, bounce free, easy to see and use, zipper pulls.
  • Zig-zagged stitching over elastic for ultra-durability increased stretch, and rebound.
  • Simple, fast, easy in and out bladder attachment.
  • Magnon pocket for sweat-free pills, with automatic magnetic closure for rapid access to pills and other essentials. Patent pending.

SIZE:

Fit: Unisex

Size(s): Small (30″-36″), Medium (32″-38″), and Large (34″-42″)

Color: Pitch Black,

Hydration (not included) : 2L Reservoir

Bottle Compatible (not included):  UltraFlask, Formula 250, Human 20 oz 2.0, or Collapsible Bottle

Capacity: 854 c.i. (14L)

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 5713486855

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Chloe
San Leandro, US
★★★★★ 3
Its alright
Color: Black, Size: 5X-Large
True to size per the size chart. The fabric is soft but it it feels cheap to me. It attracts lint but you can brush it off easily so its not the cheapest material I've dealt with. Also, it is opaque (not see through). There is no front/ back indicator either which is indicative of a cheap shirt in my opinion. Would be friendly for tag sensitive people (to stay positive).
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Reviewed in the United States on April 14, 2026
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Amazon Customer
Massapequa, US
★★★★★ 5
Fit and colors are perfect
Color: Black, White, Apricot, Size: Large
They fit very well, I got them for my husband and he was very excited for the style & fit i am actually going to buy him another pack
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Reviewed in the United States on October 7, 2025
C
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ChilledOut
Omaha, US
★★★★★ 1
Fuzzballs get wearing once
Color: Black, Size: X-Large
Very smart to wear, but the quality is terrible so after one wash the collar start fraying and fuzzballs start forming. Very disappointing.
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Reviewed in the United States on June 2, 2026
J
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jose ricardo quezada fernandez
Draper, US
★★★★★ 5
Perfect Fit and Excellent Quality!
Size: Medium, Color: White
The Wihion mock turtleneck fits perfectly and feels very comfortable. The fabric quality is excellent, and it looks stylish for both casual and evening outings. Highly recommended! fits perfectly and the fabric quality is excellent. It’s ideal for evening outings and gives a very elegant, “old money” look. Very stylish, comfortable, and highly recommended!
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Reviewed in the United States on October 11, 2025
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TFUL
Los Angeles, US
★★★★★ 5
Great fit
Size: 3X-Large, Color: Wine
Good quality and good fit
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Reviewed in the United States on March 4, 2026

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