They fit any body contour. It provides up to 30 minutes of intense and soothing moist heat. Dimensions: 13 x 30 cm. Knee / Shoulder. Indications bags and warm compresses: • Reduction of muscle spasm. • Support kinesiology and massage, by reducing the resistance to stretching of tissues. • Analgesia in hypersensitive and fibromyalgia points. • Applying heat to the abdomen surface reducing gastrointestinal discomfort and reduced gastric acidity is obtained.