RelaxCoo Heating pad Microwavable with Washable Cover 6 * 12" Microwave Moist Heat Pad for Neck Shoulder, Cramps, Back Pain Relief, Warm Compress Rice Bean Bag Hot Pack for Muscles, Joints, Lavender - Grey 1 Pack

You can also make these w rice in a sock! These are great for back pains in labor, or on your belly, neck, or any other pints that are painful or achey for you. Easy to heat up and can gauge the temperature you want