Straffr is a smart resistance band that helps you exercise on the go
TechCrunch
SEPTEMBER 21, 2021
Think Peloton ‘s stationary bike for spin classes or wall-mounted strength training rig Tonal. Straffr’s team developed the material and has some patents on it. Basically it’s hard to know if you’re performing the movements in an optimal way or just mindlessly twanging a piece of rubber.
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