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UltrAspire Alpha 3.0 Hydration Pack
Sale $74.97$124.95 $ 40% Off

Item # ULA001O

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Item # ULA001O


Don't Forget The Pants.

You wouldn't head into work without adequate coverage for the bottom half of your body, so why head into a long run without proper hydration? Case in point, the UltrAspire Alpha 3.0 Hydration Pack is designed to keep you well-prepared whether you're racing a 100-miler or going out for a fun-type-two-kind-of-leisurely and lengthy jaunt in the mountains. 

The Alpha features a lightweight, soft, and breathable mesh throughout the body that wicks away moisture and dries quickly, while the silicone and PU coatings offer light resistance to abrasive objects and water (be it precipitation or tears of discomfort). Unique to UltrAspire is the Max O2 Sternum straps, which helps provide unencumbered breathing and a bounce-free fit, in turn allowing you to stay in stride comfortably—without sacrificing the overall stability of the pack. Two front drop-in pockets accommodate the included hydration flasks, and the magnetic pocket is ideal for electrolyte tablets or pills. A zippered pocket makes its case as a safe haven for necessities such as keys or credit cards. And, not to mention, the Alpha 3.0 is compatible with a two liter hydration reservoir, though it is not included.

  • A versatile, unisex hydration vest for running
  • Stretch webbing keeps pack secure and assures breathability
  • Clothes stash accommodates lightweight shell
  • Bevy of food or tablet pockets keep necessities close
  • Compatible with two liter reservoirs
  • Two front flasks are included for enhanced convenience

Tech Specs

nylon, mesh, PU coating, silicone coating
5.57L (350cu in)
Hydration Compatible:
yes, 550ml UltraFlask and 2L reservoir
Reservoir Included:
yes, 550ml UltraFlask (2 included)
[front] 2 hydration flask, 1 magnetic, 1 zippered, [back] 1 zippered
9 x 3 x 12in
Claimed Weight:
Recommended Use:
trail running, road running
Manufacturer Warranty:
limited lifetime

Size Chart


Hydration Vests
Chest 28 - 42in
(71 - 107cm)
36 - 46in
(91 - 117cm)
Torso Length 16 - 20in
(41 - 51cm)
18 - 24in
(46 - 61cm)
Chest 28 - 44in
(71 - 112cm)
32 - 50in
(81 - 127cm)
Torso Length 16 - 20in
(41 - 51cm)
20 - 24in
(51 - 61cm)
Waist 26 - 40in
(66 - 102cm)
30 - 42in
(76 - 107cm)
Alpha 2.0
Chest 26 - 35in
(66 - 89cm)
32 - 38in
(81.3 - 96.5cm)
38 - 46in
(96.5 - 116.8cm)
How to Measure:
For best results, take measurements over your underwear.
Measure the circumference around the fullest part of your chest.
Torso Length:
Measure from the top of one shoulder down the center of your back to the point at the same level of your hip bones.
Measure the circumference around the point at which your body bends when you lean to a side (typically near your navel).

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