NOTICE: If there are any differences between this chart and the official size <br />chart of WISH、please take THIS CHART as the standard<br /><br />Band:SCOYCO<br /><br />Model:JK37<br /><br />color:Black<br /><br />size:M/L/XL/XXL/XXXL;<br /><br />Material: 1.0 years imitation velveteen、 600D Oxford cloth、 CTH-1302、0.25MM general light reflective T / C fabric、 cloth miter 210T encryption、 triangular mesh、 0.7-0.8mm Microfiber、 210T dense cloth<br /><br />Function: 3D cut、 reflective at night、 ventilation design、 interior seven protection、 durable wear、 comfortable、 can be used with an external N04 Neck use adjustable built-in protective gear design