Meet the RollTec Rashguard: a smart wearable device designed with grapplers in mind. It tracks your rolling positions and suggests what to work on based on the data it collects. The rashguard has a motion sensor inside that connects to your iOS or Android smartphone to tell you which grappling positions you have spent the most time in.
More gadgets like this ➡️ : here
RollTec uses your data to suggest how to improve your game and what to work on. It could prove useful to BJJ, Sambo, and MMA students. More information is available on Kickstarter.
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