Specifications: It can relieve the local fatigue and pain of body. High heat preservation, comfortable, lightweight and breathable To stimulate acupuncture points, dredge the meridians, promote the body metabolism. Item Name: Shoulder Pad Material: Tourmaline Cloth Features: Breathable, Soft, Easy to Wear, Self-Heating Size Details [Our Size S] Shoulder: 35cm/13.78" - 38cm/14.96", Weight: 90g - 110g (Approx.) [Our Size M] Shoulder: 38cm/14.96" - 41cm/16.14", Weight: 110g - 130g (Approx.) [Our Size L] Shoulder: 41cm/16.14" - 43cm/16.93", Weight: 130g - 150g (Approx.) [Our Size XL] Shoulder: 43cm/19.93" - 48cm/18.9", Weight: 150g - 190g (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Shoulder Pad