1.With Leather lining suspension, the quick release buckle and the connector; 2.Features: sturdy and durable, anti-impact, anti-shock, anti-knife and cut. There is a lacing strap in the suspension system. It can be fully adjusted with the head strap and cheek strap. And there is a space between the mesh top strap and the shock-absorbing foam to keep the air circulation cool; 3.Shell material: PC/ABS (alloy resin); 4.The helmet shell is high-pressure injection molded at one time. And the shell is treated with a special process of external hardening; 5.Product weight:0.9kg Product size: L; 6.Features: It is mainly used to protect the heads of service personnel. It is widely used in security, military training, electric power, mining, public security law enforcement agencies and other institutions. Wearing Device Strength Using the opening and closing function of the wearing buckle on the helmet is convenient and reliable. And it can effectively adjust the tightness of the lace. The strap can withstand a 900N tensile load. In the process of adding planting, there is on phenomenon of tearing, connecting parts falling off and wearing buckle loosening. The elongation of the strap should be less than or equal to 25mm. The buckle should be able to be used normally after unloading. The helmet top suspension system can ensure ventilation and easy adjustment. Collision Energy Absorption Performance This German helmet can withstand the impact of 49J energy. And the shell does not break. Penetration Resistance This German helmet can withstand the puncture of 88.2J energy. Flame Retardant Performance The continuous burning time of the outer surface of the helmet shell should be less than or equal to 10s.