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Elite Stability for Unstoppable Trail Momentum
Stepping out your front door for a multi-hour training block or lining up at an alpine ultra-marathon requires equipment that completely eliminates distraction. When you are pushing your limits, you cannot afford a pack that bounces, chafes, or complicates your hydration routine. The On Ultra Vest Pro is the next generation of pinnacle trail design, athlete-tested and built to handle technical terrain. It serves as an incredibly stable daily driver for self-supported weekend long runs from your doorstep, while packing the elite, rugged architecture needed when backcountry conditions get wild. Weighing an ultra-lightweight 300 grams, it forms a seamless, second-skin fit that moves dynamically with your body.
Intelligent Storage and Removable Weather Protection
Out on the trail, staying efficient means having instant access to your essentials without constantly pulling off your pack. The front harness layout features an optimised zippered pocket designed to keep your phone secure and within arm's reach, alongside generous side stash pockets for rapid access to gels, snacks, and gloves. Around the back, a specialized no-bounce zippered pocket isolates your heavier gear. For unpredictable Canadian weather, the vest includes an innovative, removable seam-taped dry pack with a water-resistant zipper, giving you a completely bone-dry vault to protect spare layers or electronics from sudden downpours.
No-Budge Ergonomics and Fluid Refills
Sustaining your pace on steep climbs and fast technical descents demands an absolute lock on your payload. This vest features an innovative, highly adjustable front closure system that delivers a definitive, no-budge fit without constricting your breathing. For seamless hydration, it comes equipped with two premium 500ml Hydrapak® easy-squeeze, BPA-free flasks positioned in re-engineered front holsters for faster, effortless sipping on the move. Complete with a modular daisy-loop attachment system for securing trekking poles or extra gear, and a built-in safety whistle, this best-in-class hydration vest keeps you fuelled, focused, and moving forward.
Premium Performance & Technical Features
- Bounce-Free On Harness: Advanced tailored architecture and an innovative front closure system eliminate pack shift on steep inclines and declines.
- Dual Hydrapak® Flasks Included: Comes complete with two 500ml easy-squeeze, BPA-free soft flasks for fast, trailside hydration.
- Removable Seam-Taped Dry Pack: Integrated water-resistant back compartment keeps high-value electronic gear and dry layers completely protected from the elements.
- Rapid-Access Pocket Layout: Features a secure front zippered phone pocket, spacious side fuel bays, and an anti-bounce rear zipper pocket.
- Modular Pole-Carrying Loops: Built-in daisy chain loops provide customisable, stable attachment options for trekking poles or external apparel layers.
- Reinforced High-Wear Zones: Heavy-duty materials protect critical friction points from premature wear, ensuring ultimate durability for Canadian trail conditions.
