When putting on the vest, first close the two elastic fasteners on the front and fix the whole thing with the two auxiliary straps. The inner lining to protect the clothes and jacket can be removed but not washed. When the vest is exposed to rain or moisture, it must be stored dry to avoid corrosion. The coating can be washed and dried normally. Do not dry the vest at high temperatures when exposed to rain or moisture. Instead, place it in a cool, well ventilated place to protect it from mould and insect infestation. If the vest has been subjected to knife slashes (no matter where), it must not be reused. The vest must first be repaired or the affected plate replaced.