Calming Heat Copper + Charcoal Massaging Weighted Heating Pad by Sharper Image features 4lb weighted massaging design providing the perfect amount of pressure, combined with soothing heat & massage therapy for relief. The special design is infused fabric with Copper + Charcoal for ...Calming Heat Copper + Charcoal Massaging Weighted Heating Pad by Sharper Image features 4lb weighted massaging design providing the perfect amount of pressure, combined with soothing heat & massage therapy for relief. The special design is infused fabric with Copper + Charcoal for antimicrobial properties.