It is made of metal materials combined with other non-metal materials and sealed with waterproof cloth. It has the characteristics of excellent stab resistant effect, small surface density, ergonomics, comfortable wearing, waterproof and moisture-proof. The metal structure can effectively resist the stab risk and has excellent anti-stab performance. The non-metal material has the material composition of absorbing and diffusing the impact energy, which can effectively reduce the non penetrating damage and increase the wearing comfort. And passed the test of GA68-2019, 24J(- 20 ℃ / 55 ℃).