UltrAspire Zygos Vest Review As a seasoned ultrarunner, I’ve explored various race vests, and for Tahoe 200 (which I ran in July 2023) I decided to try out both the UltrAspire Zygos and the Big Bronco Vest. The Zygos 5.0 stood out for me as a high-capacity vest designed for the long haul, I’m talking … Continue reading UltrAspire Zygos and Big Bronco Vest Reviews