UltrAspire Bronco Lightweight Running Race Vest - Desert Sage, Large (34"-42") with Soft Flasks

Endurance-Ready design born from a champion collaboration

Developed in partnership with UltrAspire Elite Athlete and ultramarathon champion Jeff Browning, the Bronco Race Vest blends racing-day practicality with everyday comfort. With a total capacity around five liters, it’s designed to carry essentials without bulk, and it accepts varied hydration options, including a 1-liter reservoir for flexible fueling on long trail days.

The vest offers a thoughtfully organized pocket map to keep items accessible and secure while you move. The front harness features four pockets sewn from four-way stretch mesh, ideal for gels, small layers, or a compact bottle. Side saddlebags provide substantial capacity with elastic closures to keep contents stable as your pace shifts. The back compartment is designed to lay flat when empty, yet the 4-way stretch mesh expands to accommodate larger loads when needed. A soft foam flare guides your hand to the main entry, making access intuitive even on rocky sections. A sweat-proof pocket sits against the back panel to protect valuables in humid or sweaty conditions.

Breathable comfort meets practical design. UltrAcool Light Mesh on the back panel enhances airflow, helping you stay cooler when the vest is fully loaded. The patent-pending MaxO2 Form closure uses stretch cord for unrestricted breathing while maintaining a stable pack—ideal when your stride length changes on climbs or sprints. The ErgoFit-inspired design focuses on natural movement and weight distribution, reducing bulk where your body works the hardest. Available in Desert Sage and offered in three sizes, the Bronco is built to fit a range of torsos for extended wear without chafing.

Versatile on the go: what you get

• Five-liter total capacity with compatibility for multiple hydration options, including a 1 L reservoir.
• Four front pockets plus side saddlebags and a back compartment for seven total pockets.
• Soft foam flare and a sweat-proof pocket for quick access and moisture protection.
• Breathable back panel and stability-focused closure for comfortable, long-wear performance.

Whether you’re chasing long miles or enjoying fast-paced day trips, the Bronco aims to be a dependable companion that supports your stride without dictating it. This vest blends function with form in a way that suits serious runners and ambitious enthusiasts alike.