FlexiPac® Hot Cold Therapy Pack, 8 x 14 Inch, 1 Each Blankets Just squeeze and shake to The unfolded towel measures Just squeeze and shake to mix ammonium nitrate and water: Pack will be cold enough within 30 seconds Ergonomic hand held device for objectively quantifying muscle strength * The test is performed with the clinician applying force to the limb of a patient * The objective of the test is for the clinician to overcome or break the patient s resistance * The MMT records the peak force and the time required to achieve the break providing reliable accurate and stable muscle strength readings that conform to most manual muscle testing protocols * Features a wide range of customizable options for data storage preset test times and force thresholds * Size: 3 8 x 14 inches Microwavable to provide soothing heat