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Title: OUCH!
Review: If you have back problems do not buy this product. Homedics makes better massager mats than this one. HoMedics MMSQ-100 is lumpy and uncomfortable. I felt worse after using it. My husband used it a few times and it started to spark, so we threw it away. We've had much better luck with their massager chair and other massager mats.
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