This Vest Changed How We Train
4 May 2026 · 0 min
0:27
A trainer runs 400 meters then 1 kilometer in a weighted vest, swapping to a different one mid-workout. The ION feature makes a noticeable difference in how the sprint feels and performs.
A trainer runs 400 meters then 1 kilometer in a weighted vest, swapping to a different one mid-workout. The ION feature makes a noticeable difference in how the sprint feels and performs.
This is so good. Right now I'm doing a 400-meter sprint. In between, they're doing a full HIROX 1-kilometer sprint with the weighted vest. So we switched up weighted vest halfway through. You feel it. That ION makes a difference.
