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$$88.95 () Includes selected options. Includes initial monthly payment and selected options. Details
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Pachaleta INC
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This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
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UltrAspire Alpha 4.0 Unisex Hydration Pack - 6 Liter Running Vest w/Fluid Capacity 2L Reservoir, 2 x 550 mL UltraFlask, and 2 x 500 mL Softflasks (Sold Separately)

4.4 4.4 out of 5 stars 36 ratings
$88.95
FREE Returns
Emerald Blue
Large (37"-42")
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Purchase options and add-ons

Brand Ultraspire
Color Emerald Blue
Material Polyester
Sport Running
Strap Type Shoulder

About this item

  • ERGOFIT - The human body is complex with intricate detail and function. The same attention to detail is present in the design of our packs to enable precise movement, contact, and weight distribution which ensures that there is never any inhibition to the biomechanics of the human body
  • SHOULDER STRAPS - Human shoulders aren’t straight, so a pack’s shoulder straps shouldn’t be either. Longer straps allow the back portion to sit deeper on the neck to prevent any rubbing. This addition in length helps to create slope as the straps come over the top of the shoulders and around the neck following the natural curve of the body. The harness then follows an S curve around the arms and chest area to avoid any hindrance to the running motion
  • ULTRACOOL SYSTEM - When the human body exerts force, 80% of the power it generates is converted to thermal energy. This means that most of the energy you use when running, climbing, or doing anything else is lost and becomes heat. The hotter you are, the worse you perform. This system allows you to maintain a lower body temperature by dispersing heat during intense activity, keeping you performing at the highest level
  • SMALL FOOTPRINT & ULTRACOOL MESH - Anatomically engineered, the pack covers only what is necessary on the body to keep it secure thus allowing for your temperature to remain cooler during heavy energy exertion. The most breathable mesh on the market, this 3-layered, large holed honeycomb mesh is made from polyester which helps to draw moisture away from the skin without absorption
  • MAX02 STERNUM - The Max02 Sternum is a shock cord securing system that helps create a comfortable & natural breathing pattern while at the same time keeping the pack secure. The shock cord allows for stretch outward and 100% rebound which keeps the pack snug against your body empty or fully loaded with no restriction of movement
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Frequently bought together

UltrAspire Alpha 4.0 Unisex Hydration Pack - 6 Liter Running Vest w/Fluid Capacity 2L Reservoir, 2 x 550 mL UltraFlask, and 2
$88.95
Get it as soon as Monday, May 13
Only 1 left in stock - order soon.
Sold by Pachaleta INC and ships from Amazon Fulfillment.
+
Ultraspire 2.0 Bladder for Hydration Backpacks - BPA & PVC Free - Leakproof Water Reservoir
$39.65
Get it as soon as Tuesday, May 14
Only 4 left in stock - order soon.
Sold by Bay 15 and ships from Amazon Fulfillment.
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Product Description

ultraspire alpha 4.0 hydration vest running info
ultraspire alpha 4.0 hydration vest running features
ultraspire alpha 4.0 hydration vest running technologies
ultraspire alpha 4.0 hydration vest running details
ultraspire alpha 4.0 hydration vest running size chart
ultraspire history
alpha 4.0 race vest alpha 3.0 race vest hydration astral 3.0 race vest
Alpha 4.0 Alpha 3.0 Astral 3.0
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Customer Reviews
4.4 out of 5 stars
36
5.0 out of 5 stars
2
—
Price $88.95 — —
Hydration Included Not included 2 x 550 mL UltraFlask 2L bladder
Sizes LG (37"-42"), MD (34"-39"), SM (31"-36") Small, Medium or Large Women Specific - Universal (26″-50″)
Weight 10 oz (283g) 12.2 oz (345 g) 13.6 oz (386 g)
Capacity Up to 3 L Up to 3 L 425 c.i. (7 L)

Product information

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UltrAspire

UltrAspire Alpha 4.0 Unisex Hydration Pack - 6 Liter Running Vest w/Fluid Capacity 2L Reservoir, 2 x 550 mL UltraFlask, and 2 x 500 mL Softflasks (Sold Separately)

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
36 global ratings

Customers say

Customers like the fit, quality, weight and breathability of the hydration pack. For example, they mention it's comfortable, light and breathable. Some appreciate the storage space, saying it can conveniently store snacks, cell phones and hand warmers.

AI-generated from the text of customer reviews

5 customers mention5 positive0 negative

Customers are satisfied with the fit of the hydration pack. They mention that it has a great fit, is comfortable with a 2L bladder, and is light and accessible.

"Love this pack. It's lite, well balanced, fits perfectly, and is well thought out. I use it for running as well as Xc skiing...." Read more

"Comfortable and great fitting vest. This is pretty much a zero bounce setup, comfortable with a 2L bladder, bottles or a combination of both...." Read more

"Vest ahs a great fit, I am 5'9" 140lb male...." Read more

"Fits well, no to very little bounce even on hard down hill runs on technical terrain." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the quality of the hydration pack. They mention that it is a great vest, well thought out, and lightweight.

"Love this pack. It's lite, well balanced, fits perfectly, and is well thought out. I use it for running as well as Xc skiing...." Read more

"...Overall the Alpha 4.0 is very good, all purpose vest. Large storage capacity and hydration options for a "small" pack...." Read more

"...Lots of storage ,well thought out though i do think the vest is a little heavy." Read more

"great vest, much more lightweight and breathable than my UD vest..." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the weight of the hydration pack. They mention that it's comfortable, light, and breathable. Some say that it can be used for light packing.

"...I was honestly surprised how lightweight and breathable the vest is...." Read more

"...And this pack does not disappoint. It is used for light packing, and i am happy with it." Read more

"Comfortable, light and accessible...." Read more

"great vest, much more lightweight and breathable than my UD vest..." Read more

3 customers mention3 positive0 negative

Customers like the breathability of the hydration pack. They mention that it initially feels light and breathable.

"...I was honestly surprised how lightweight and breathable the vest is...." Read more

"...Oddly for a vest that intially feels light and breathable, this is by far the hottest vest I own...." Read more

"great vest, much more lightweight and breathable than my UD vest..." Read more

3 customers mention3 positive0 negative

Customers like the storage space in the hydration pack. They mention that it has lots of storage, and can conveniently store snacks, cell phones, and hand warmers.

"...I use it for running as well as Xc skiing. It can conveniently store snacks, cell phone, hand warmers, and easily attach the layers I have to shed..." Read more

"...Overall the Alpha 4.0 is very good, all purpose vest. Large storage capacity and hydration options for a "small" pack...." Read more

"...Lots of storage ,well thought out though i do think the vest is a little heavy." Read more

Great all purpose vest!
4 Stars
Great all purpose vest!
Comfortable and great fitting vest. This is pretty much a zero bounce setup, comfortable with a 2L bladder, bottles or a combination of both. The phone pocket on top left chest is simple, effective, it works. The trade off is losing the small zippered key pocket found on older Ultraspire vests. I miss the key pocket. There are two large zippered pockets on the obliques that can be used to secure pretty much anything, gear, lights, snacks, etc. Decent storage in the back , with external bungie and second layer through pocket. Oddly for a vest that intially feels light and breathable, this is by far the hottest vest I own. It's not too hot, but it's my last choice on hot days.Overall the Alpha 4.0 is very good, all purpose vest. Large storage capacity and hydration options for a "small" pack.Manufacture note.No bottles are included! The Ultraspire UltraFlask bottles are, in my opinion, essential to the no bounce fit and positive experience with Ultraspire products. They should be included with all your products.
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Top reviews from the United States

Curtis perry
5.0 out of 5 stars Fantastic product!!!
Reviewed in the United States on February 18, 2021
Verified Purchase
Love this pack. It's lite, well balanced, fits perfectly, and is well thought out. I use it for running as well as Xc skiing. It can conveniently store snacks, cell phone, hand warmers, and easily attach the layers I have to shed when I get to warm.
One person found this helpful
Helpful
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Michelle
5.0 out of 5 stars Comfortable & Light
Reviewed in the United States on September 12, 2020
Color: Emerald BlueSize: Large (37"-42")Verified Purchase
This is my first running hydration vest. I bought because I moved to Texas during the summer and needed a way to carry fluids with me. I was honestly surprised how lightweight and breathable the vest is. Even running in temps greater than 90 degrees F I often forgot I had it on.

I've used soft flasks in the front pockets and they stay put even with my large chest (DD). I was nervous buying this as my bra size is 42DD, but it fit over the gals without issue. I would highly recommend this to anyone looking for a hydration vest for running.
5 people found this helpful
Helpful
 Report
Amazon Customer
4.0 out of 5 stars Great all purpose vest!
Reviewed in the United States on December 15, 2020
Color: Emerald BlueSize: Large (37"-42")Verified Purchase
Comfortable and great fitting vest. This is pretty much a zero bounce setup, comfortable with a 2L bladder, bottles or a combination of both. The phone pocket on top left chest is simple, effective, it works. The trade off is losing the small zippered key pocket found on older Ultraspire vests. I miss the key pocket. There are two large zippered pockets on the obliques that can be used to secure pretty much anything, gear, lights, snacks, etc. Decent storage in the back , with external bungie and second layer through pocket. Oddly for a vest that intially feels light and breathable, this is by far the hottest vest I own. It's not too hot, but it's my last choice on hot days.

Overall the Alpha 4.0 is very good, all purpose vest. Large storage capacity and hydration options for a "small" pack.

Manufacture note.
No bottles are included! The Ultraspire UltraFlask bottles are, in my opinion, essential to the no bounce fit and positive experience with Ultraspire products. They should be included with all your products.
Customer image
Amazon Customer
4.0 out of 5 stars Great all purpose vest!
Reviewed in the United States on December 15, 2020
Comfortable and great fitting vest. This is pretty much a zero bounce setup, comfortable with a 2L bladder, bottles or a combination of both. The phone pocket on top left chest is simple, effective, it works. The trade off is losing the small zippered key pocket found on older Ultraspire vests. I miss the key pocket. There are two large zippered pockets on the obliques that can be used to secure pretty much anything, gear, lights, snacks, etc. Decent storage in the back , with external bungie and second layer through pocket. Oddly for a vest that intially feels light and breathable, this is by far the hottest vest I own. It's not too hot, but it's my last choice on hot days.

Overall the Alpha 4.0 is very good, all purpose vest. Large storage capacity and hydration options for a "small" pack.

Manufacture note.
No bottles are included! The Ultraspire UltraFlask bottles are, in my opinion, essential to the no bounce fit and positive experience with Ultraspire products. They should be included with all your products.
Images in this review
Customer image Customer image Customer image Customer image Customer image
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6 people found this helpful
Helpful
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Cyn
5.0 out of 5 stars A keeper
Reviewed in the United States on July 15, 2021
Verified Purchase
Been wanting hydration pack for my long run. And this pack does not disappoint. It is used for light packing, and i am happy with it.
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Jay brewer
5.0 out of 5 stars Bravo!!
Reviewed in the United States on November 30, 2020
Verified Purchase
Perfect!
Ran fifty miles with it.
Recommended to others!
One person found this helpful
Helpful
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Doug J.
5.0 out of 5 stars Comfortable hydration pack with great storage!
Reviewed in the United States on March 5, 2020
I’ve put over 100 miles on my Alpha 4.0 using both a 2L bladder and two Ultraspire 500ml soft flasks. I usually carry my iPhone 7 Plus, as well as a key fob and a gel or two. I’ve used the rear shock cords to secure a long-sleeved shirt that I removed when I got hot.

The pack doesn’t bounce or chafe, and there seem to be enough storage pockets and shock cords for everything I could need. Plan on using this for 50- and 100-mile ultras through mountainous terrain. I have every confidence it will do the job well.

Great pack!
4 people found this helpful
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Amazon Customer
4.0 out of 5 stars great fit
Reviewed in the United States on July 30, 2021
Verified Purchase
Vest ahs a great fit, I am 5'9" 140lb male. Ordered a size small as I find the ultraspire vests have a good stretch to them , If in between sizes I would size down. Lots of storage ,well thought out though i do think the vest is a little heavy.
2 people found this helpful
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Darwin Runner
4.0 out of 5 stars Comfortable, light and accessible.
Reviewed in the United States on December 20, 2019
Verified Purchase
Fits well, no to very little bounce even on hard down hill runs on technical terrain.
4 people found this helpful
Helpful
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Top reviews from other countries

Anna
2.0 out of 5 stars Not like my old Ultraspire pack
Reviewed in Canada on April 20, 2022
Verified Purchase
Overall, I'm disappointed. I ordered this as a replacement for an Ultraspire pack I loved (too much, because it was falling apart from use). I may have to do more research and spend more money on another, differently designed pack.

Pros:
- lightweight
- front pocket fits new iPhone (but not with a zipper, so it it's only secured by a pull-top on the pouch)

Cons:
- hot on my back (hotter than my old one, despite being light)
- bobbly things on the ends of cords/elastics flop around and hit my hands while running (I may have to cut them off, which goes against the whole point of buying a new, intact pack)
- small amount of storage (no big compartment that would fit extra supplies)
- no clip for hose on front of pack (just dangles)
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