I've owned this wrap less than 2 weeks warming it ...
I've owned this wrap less than 2 weeks warming it in the microwave for 1 minute.  It already has a hole and clay beads are falling out everywhere.  This is my third brand of heat wrap I've ordered from amazon over the last 2 months and all end with the same result.  Quality on these products seems to have really lowered.
Rating: 1 stars