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So I picked these up and the track straps for the feet and after a few months, I noticed some pulled fabric that was concerning then it ripped in a few places around where the plastic base part is that the tracker screws onto. This flaw has happened on both the track straps for the waist and the foot tracker ones. I do not use them daily either.
TLDR; They work good at the begenning but my set has ripped where the connectors are and are barely usable now.