Straffr is a smart resistance band that helps you exercise on the go
TechCrunch
SEPTEMBER 21, 2021
Straffr’s smart resistance band, which comes in either medium or strong strength grades, connects to the companion app using Bluetooth and starts tracking soon as you start stretching and flexing — providing feedback on your training session, not just on reps but on “quality” of exercise, per CEO Stefan Weiss.
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