Ultrun S Pack
Compression-fit Compressport race vest for trail/ultra — second-skin bounce control and flask carry for racers who want apparel-like fit over traditional pack volume.
Unisex sizing.
- Hydration Vests
- Race Vests
- Best forSecond-skin bounce control on race days as a weekly priority.
- CategoryRunning Packs & Vests
Overview
Compression-fit Compressport race vest for trail/ultra — second-skin bounce control and flask carry for racers who want apparel-like fit over traditional pack volume.
A compression-fit Compressport race vest for trail/ultra flask carry when bounce control matters most. Skip it if you need structured 8–12L adventure volume.
- Second-skin compression fit keeps flasks planted
- Light race profile for fast mountain and road ultras
- Pairs with Compressport Free Belt Pro for extra fuel
Kitletics Review · 8.3 Good
Compressport Ultrun S Pack is a Compression-fit race vest for trail/ultra flask carry. I'd shortlist it for second-skin bounce control on race days. The trade-off is you need structured 8–12L adventure volume. Skip it if you need structured 8–12L adventure volume.
Read Kitletics Review →Performance scores
- Capacity7.6
- Bounce control8.8
- Comfort & fit8.4
- Race-kit capacity7.2
- Phone carry7.5
- Versatility7.2
Overall score: 8.3
Pros & cons
Pros
- Second-skin compression fit keeps flasks planted
- Light race profile for fast mountain and road ultras
- Pairs with Compressport Free Belt Pro for extra fuel
Cons
- Compression sizing is unforgiving if you size wrong
- Limited structured volume vs 8–12L adventure vests
How it fits different uses
| Use case | Score |
|---|---|
Trail Running UltRun S Pack for compression-fit race days. | 86 |
Marathon UltRun S Pack for compression-fit race days. | 84 |
Long Runs UltRun S Pack for compression-fit race days. | 84 |
Ultra UltRun S Pack for compression-fit race days. | 82 |
Kitletics Review
A buying decision based on structured product data and evidence — not invented star ratings or fake user reviews.
Kitletics Review
Verdict
Compressport Ultrun S Pack is a Compression-fit race vest for trail/ultra flask carry. I'd shortlist it for second-skin bounce control on race days. The trade-off is you need structured 8–12L adventure volume. Skip it if you need structured 8–12L adventure volume.
Pros
- Second-skin compression keeps flasks planted
- Light race profile for fast mountain days
- Pairs cleanly with Compressport belt extras
- Second-skin compression fit keeps flasks planted
- Light race profile for fast mountain and road ultras
Cons / Trade-offs
- Limited structured volume vs adventure vests
- Compression sizing is unforgiving if you size wrong
- Limited structured volume vs 8–12L adventure vests
Best for
- Second-skin bounce control on race days as a weekly priority.
- Pairs with Compressport Free Belt Pro for extra fuel.
Not ideal for
- Runners who need structured 8–12L adventure volume.
- Those looking for Your fit, carry, or awareness needs sit outside what this product was built to do.
- Those looking for Compression sizing is unforgiving if you size wrong.
- Those looking for Limited structured volume vs 8–12L adventure vests.
Performance breakdown
- Role fit8.3· Editorial
- Value7.7· Editorial
Scale: Poor (1–3) · Fair (4–5) · Good (6–7) · Very Good (8) · Excellent (9–10)
How it performs
What it is
Compression-fit race vest for trail/ultra flask carry. Compressport Ultrun S Pack is built for a defined role in the category — use that as your first filter. I'd shortlist it when you want second-skin bounce control on race days. Skip it if you need structured 8–12L adventure.…
Key specs
Here are the numbers that matter for the Compressport Ultrun S Pack: • Capacity: 5 L • Weight: 180 g • Included flasks: 2 • Pole attachment: yes • Bounce control: high • Size range: XS–XL Treat specs as filters for capacity, fit, battery, waterproofing and construction — not the.…
Where it is strongest
I'd buy the Compressport Ultrun S Pack when these outcomes match what you need most weeks: What it does well • Second-skin compression keeps flasks planted • Light race profile for fast mountain days • Pairs cleanly with Compressport belt extras The standout is second-skin.…
Trade-offs & limits
The Compressport Ultrun S Pack is not trying to do every job. These are the compromises to weigh: • Compression sizing is unforgiving • Limited structured volume vs adventure vests Skip it if: You need to avoid you need structured 8–12L adventure volume. Those limits matter when.…
Key specs that matter
| Spec | Value | Why it matters |
|---|---|---|
| Weight | 180 g | Affects how lively or protective the shoe feels on easy miles. |
Should you buy it?
Buy if
- You want second-skin bounce control on race days as a weekly priority.
- Most of your sessions line up with Compression-fit race vest for trail/ultra flask carry more than an adjacent.
- Second-skin compression fit keeps flasks planted
- Light race profile for fast mountain and road ultras
Skip if
- You need to avoid you need structured 8–12L adventure volume.
- Your fit, carry, or awareness needs sit outside what this product was built to do
- Compression sizing is unforgiving if you size wrong
- Limited structured volume vs 8–12L adventure vests
Final verdict
Compression-fit race vest for trail/ultra flask carry. I'd shortlist it when you want second-skin bounce control on race days. Skip it if you need structured 8–12L adventure volume.
Alternatives to consider
NNormalRace VestWhy choose this instead: Want something lighter?
8.2 · GoodFrom € 175Compare →
SalomonADV Skin 5Why choose this instead: Want better value?
9.0 · ExcellentFrom € 145Compare →
Ultimate DirectionRace Vest 6.0Why choose this instead: Want better value?
8.9 · Very GoodFrom € 155Compare →
How we assessed it
We put this guide together from published specs and similar products in the same job. We have not personally tested this product unless the page says we did. Scores are meant to help you decide — affiliate links do not change the verdict.
Review type: Expert Research Review.
Read how we review products →
Specifications
Specifications
| Capacity | 5 L |
|---|---|
| Weight | 180 g |
| Included Flasks | 2 |
| Included Flask Volume | 500 ml |
| Flask Pockets | 2 |
| Reservoir Compatible | No |
| Reservoir Included | No |
| Total Hydration Capacity | 1000 ml |
| Bottle Capacity | 1000 ml |
| Bladder Compatible | No |
| Storage | Compression body with flask sleeves and stretch stash |
| Front Storage | Soft Flask and gel pockets |
| Rear Storage | Compression rear stash |
| Pockets | Integrated stretch panels |
| Phone Storage | Yes |
| Pole Attachment | Yes |
| Quiver Compatible | No |
| Race-Required Gear Capacity | Yes |
| Bounce Control | High |
| Breathability | High |
| Reflectivity | Yes |
| Whistle | Yes |
| Water Resistance | None |
| Fit System | Compression second Skin sizing |
| Size Range | XS–XL |
| Sizing | Compression sizing — size carefully |
| Fit / Sizing | Unisex |
| Race Suitability | Trail, Ultra, Road |
Where to buy
Showing offers for Netherlands. Prices may change at the retailer.
Amazon.nl
in stockMarketplaceNLLast checked 12 September 2026€ 155View on Amazon
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Sources & evidence
Transparency behind this Kitletics Review — not a substitute for the buying decision above.
Editorial research
Independent expert reviews & Kitletics editorial analysis
Used to cross-check ride, fit, category placement and buying trade-offs. Not a Kitletics personal wear-test.
Verified 12 September 2026
Product data verified 12 September 2026. Prices checked 12 September 2026.
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