Invel MIG3 Power T-Shirt Size G/L A classic t-shirt that wraps your body in warmth with far-infrared heat retention and can be worn year-round. Made of thin, stretchy, and quick-drying material with UV cut processing. Invel products use the proprietary Bio Ceramic MIG3 (patented) technology, which emits premium far-infrared rays from 3 to 14.8 μm. MIG3 has the characteristic of strongly emitting far-infrared rays, especially growth rays, which resonate with the water molecules in your body to provide a warming effect, balance your body, and is patented. Therapeutic products using this patented technology, "Bio Ceramic MIG3," can be worn at home, at work, before, during, and after exercise. They can also be worn while sleeping. I received this item a few years ago, but it has been stored without being used. It is in good condition with no scratches. Shoulder width: 33 cm Body width: 43 cm Length: 58 cm Sleeve length: 23 cm Cuff width: 13 cm Measurements are taken by an amateur with the item laid flat. We request purchases from those who understand that this is a used item.