Neck & Shoulder Massager

…like wearing a millstone around your neck. Heavy, because of the powerful massagers inside. They work easiest if sitting atop your shoulders. If you need it lower, you kind of have to lean (or lay) forward as the weight and action cause these to inch off of your “spot”.
They are quite effective, especially if you like a good sore muscle punching and your friends are sick of giving you shoulder massages.