Re-use it over and over again for backaches, arthritis, bursitis, menstrual cramps, neck pain, muscle strain, fibromyalgia, stress, or warmth. - Heat 2 or 3 minutes in microwave and receive soothing moist heat relief, with no electrical cords to tangle you up. - Microwaveable heating pads improve blood flow for added pain relief and enhance the body's natural healing power over aches & stress. - Scientists have recently made a statement: "Heating pads don't just provide comfort and have a placebo effect; they actually deactivate the pain at a molecular level in much the same way as pharmaceutical painkillers." All-natural microwaveable heat bags provide moist heat and this 4" x 12" bag in 100% cotton fabric is just the right size for most aches and pains. - Re-use it over and over again for backaches, arthritis, bursitis, menstrual cramps, neck pain, muscle strain, fibromyalgia, stress, or warmth. - Heat 2 or 3 minutes in microwave and receive soothing moist heat relief, with no electrical cords to tangle you up. - Microwaveable heating pads improve blood flow for added pain relief and enhance the body's natural healing power over aches & stress. - Scientists have recently made a statement: "Heating pads don't just provide comfort and have a placebo effect; they actually deactivate the pain at a molecular level in much the same way as pharmaceutical painkillers." All-natural microwaveable heat bags provide moist heat and this 4" x 12" bag in 100% cotton Bamboo fabric is just the right size for most aches and pains. Corn-Bags, Inc. Relaxer Microwaveable All-Natural Heating Pad Bamboo #1204BB - Home Health - Microwaveable Heating Pad