Smart football training jerseys made of color-shifting polyester that visually reveals muscle fatigue and injury risk zones in real-time.
A running back glances at his torso mid-drill and sees his left hamstring glowing red—the fabric is literally telling him he's about to pull it, 5 minutes before his body would have.
He stops, does the prescribed flamingo single-leg balance routine, and watches the red fade to green as his muscle recovers.
Preventing one ACL tear ($15,000+) pays for the whole team.