Big Bronco 2.0 Race Vest

Built for endurance and refined through ultramarathon experience, the UltrAspire Big Bronco Race Vest delivers high-capacity performance without compromise. Developed in collaboration with elite athlete Jeff Browning, this 12-litre vest expands on the original Bronco design—offering more storage, superior access, and all-day comfort for long, unsupported efforts.

With seven on-the-go accessible pockets and compatibility for up to four bottles plus a 2L reservoir, the Big Bronco keeps essentials close and hydration dialled. Two 500ml UltrAspire SoftFlasks are included. The Fluidic Holster System allows quick access to rear bottles, while internal dividers and gusseted compartments help organize layers, nutrition, and gear. The Max O2 Form™ closure system ensures a stable yet breathable fit, while ErgoFit™ design and UltrAcool Light Mesh deliver unmatched comfort through heat and distance.

• 12L total capacity – built for long ultras, mountain races, or full-day adventures.
• 7 accessible pockets – intuitive front and rear organization for quick access.
• Includes 2x 500ml SoftFlasks – compatible with up to 4 bottles or 2L reservoir.
• Fluidic Holster System – easy bottle retrieval from the back without breaking stride.
• Z-pole attachments – ambidextrous access and dual-purpose compression.
• UltrAcool Light Mesh – breathable, moisture-shedding, and quick drying.
• Max O2 Form™ harness – stabilizes load while allowing unrestricted breathing.
• Unisex fit – three sizes: Small (35"-40"), Medium (38"-43"), Large (43"-46").
• Weight: Lightweight construction, Desert Sage colourway.

Engineered for those who run long, move fast, and demand precision fit and function.