Using this SECPRO vest is simple. First, open the inside zipper and insert the bulletproof panels. Then, put on the vest like you would a regular piece of clothing. Adjust the elastic shoulder straps and the detachable body straps to fit you well. When wearing it, make sure it covers the areas you want to protect. As for maintenance, keep it in a dry and cool place. Don't expose it to extreme heat or sharp objects that could damage the panels or the vest material. Regularly check the straps for any signs of wear and tear. If you find any issues, contact the manufacturer for advice.