Original: $145.05
-65%$145.05
$50.77The Story
Cloudultra Pro Vest – On Running
Trail-Ready Performance. Ultra-Light Feel. Unisex Fit.
Take your trail running to the next level with the Cloudultra Pro Vest from On Running. Engineered for high-performance endurance athletes, this ultra-light and breathable trail vest is built to support long-distance adventures with optimal comfort, hydration, and storage. Designed with direct input from elite trail runners, it’s the ideal companion for mountain races, ultra runs, or long days on rugged terrain.
Made with high-stretch, recycled materials, the Cloudultra Pro Vest offers a snug, bounce-free fit that adapts to your movement. With multiple easy-access storage options and dual 500 ml soft flasks included, you’ll stay fuelled and focused across all your trail pursuits.
Key Features:
· ✅ Unisex Trail Running Vest – Designed for trail, ultra, and mountain running
· ✅ Removable seam-taped dry pack with water-resistant zipper
· ✅ High-Stretch, Recycled Fabric – Breathable and lightweight for high-output runs
· ✅ Bounce-Free Fit – Secure yet flexible, conforms to your body
· ✅ Storage Pockets – Includes zip and stretch mesh for gear, fuel, and phone
· ✅ Dual 500 ml Soft Flasks Included – Front placement for hydration on the move
· ✅ Hydration Bladder-Compatible – Space in the back panel for larger water reservoirs
· ✅ Pole Attachment Points – Quick and easy access when needed
· ✅ Reflective Details – Boost visibility during early starts and late finishes
· ✅ Reinforced Stitching – Built for rugged terrain and long days
· ✅ Minimal Bounce at Speed – Compression panelling keeps everything tight
· ✅ Designed by Trail Athletes – Performance-focused design for real conditions
Specifications:
|
Intended Use |
Trail running, ultra running, long-distance running |
|
Fit |
Unisex |
|
Material |
Recycled polyester, stretch mesh |
|
Hydration |
Two 500 ml soft flasks included; bladder-compatible |
|
Pockets |
Stretch mesh and zip options |
|
Pole Attachment Point |
Yes |
|
Reflectivity |
Yes |
|
Sizes |
S, M, L, XL |
|
Weight |
Approx. 300 g |
|
Colour |
Black |
Size Guide - Running Vests
Your body measurements in centimeters
| XXS | XS | S | M | L | XL | |
|---|---|---|---|---|---|---|
| chest | 80 — 84 | 85 — 89 | 90 — 95 | 96 — 101 | 102 — 108 | 109 — 115 |

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Cloudultra Pro Vest – On Running
Trail-Ready Performance. Ultra-Light Feel. Unisex Fit.
Take your trail running to the next level with the Cloudultra Pro Vest from On Running. Engineered for high-performance endurance athletes, this ultra-light and breathable trail vest is built to support long-distance adventures with optimal comfort, hydration, and storage. Designed with direct input from elite trail runners, it’s the ideal companion for mountain races, ultra runs, or long days on rugged terrain.
Made with high-stretch, recycled materials, the Cloudultra Pro Vest offers a snug, bounce-free fit that adapts to your movement. With multiple easy-access storage options and dual 500 ml soft flasks included, you’ll stay fuelled and focused across all your trail pursuits.
Key Features:
· ✅ Unisex Trail Running Vest – Designed for trail, ultra, and mountain running
· ✅ Removable seam-taped dry pack with water-resistant zipper
· ✅ High-Stretch, Recycled Fabric – Breathable and lightweight for high-output runs
· ✅ Bounce-Free Fit – Secure yet flexible, conforms to your body
· ✅ Storage Pockets – Includes zip and stretch mesh for gear, fuel, and phone
· ✅ Dual 500 ml Soft Flasks Included – Front placement for hydration on the move
· ✅ Hydration Bladder-Compatible – Space in the back panel for larger water reservoirs
· ✅ Pole Attachment Points – Quick and easy access when needed
· ✅ Reflective Details – Boost visibility during early starts and late finishes
· ✅ Reinforced Stitching – Built for rugged terrain and long days
· ✅ Minimal Bounce at Speed – Compression panelling keeps everything tight
· ✅ Designed by Trail Athletes – Performance-focused design for real conditions
Specifications:
|
Intended Use |
Trail running, ultra running, long-distance running |
|
Fit |
Unisex |
|
Material |
Recycled polyester, stretch mesh |
|
Hydration |
Two 500 ml soft flasks included; bladder-compatible |
|
Pockets |
Stretch mesh and zip options |
|
Pole Attachment Point |
Yes |
|
Reflectivity |
Yes |
|
Sizes |
S, M, L, XL |
|
Weight |
Approx. 300 g |
|
Colour |
Black |
Size Guide - Running Vests
Your body measurements in centimeters
| XXS | XS | S | M | L | XL | |
|---|---|---|---|---|---|---|
| chest | 80 — 84 | 85 — 89 | 90 — 95 | 96 — 101 | 102 — 108 | 109 — 115 |

























