Gel Hot And Cold Compress Knee PadsIce Compression Heated Knee Warming Universal Shoulder Pads Knee Pads Product Description: Products include1x kneelet How to use: Refrigerate, microwave Heat or Cold - Heat and cold can help relieve neck, shoulder and back pain. Hyperthermia provides deep comfort throughout the area, relieving tension, stress and pain. Simply heat a moist heating pad in the microwave for hyperthermia, and cold effectively reduces inflammation and swelling by confining vessels to the muscles and surrounding tissues. Cool microwave neck and shoulder wraps for cold in the freezer. Easy to use anytime, anywhere. Working at a desk, sitting on the sofa, preparing a meal, or even driving, this neck warmer or pack provides maximum comfort and effective pain relief. Precautions for heating: microwave for 1 minute, then take out and well, flip and heat for another 30 seconds. The total heating time should not 2 minutes.