UltrAspire Big Bronco 2.0 Race Vest Open Fire The Boa Fit System makes

The Boa Fit System makes tightening the boot up easy

The new ADV-C 4D Chassis guides the foot

Mid-rise curved waistband with belt loops

Late stage MetaRocker™

Running with poles saves your legs when running long distances or when running races

UltrAspire Big Bronco 2.0 Race Vest Open Fire The Boa Fit System makesThe Big Bronco Race Vest is a 12 liter pack built in collaboration with UltrAspire Elite Athlete and champion ultramarathoner Jeff Browning. The Big Bronco is designed to highlight all of the features of the Bronco race vest but with expanded capacity and accessibility. This vest has a total of 7 accessible pockets on the go, includes 2 UltrAspire 500 ml Softflasks, and is capable of carrying 4 bottles and a 2 liter reservoir. While two of those