Here is a smart resistance band that combines with your smartphone to give you a good workout. The STRAFFR Band as a whole is a sensor that connects to your phone. It is made from medical-grade silicone and offers up to 20kg resistance.
You may also want to see:
The companion app provides you personalized workouts and an adaptive training plan. You will be able to see workout progress, rep count, load, and other relevant metrics.
**Disclaimer: Our posts may feature aff links. As an Amazon Associate, we earn from qualifying purchases. Please read our disclaimer on how we fund this site.