bulletproof vests can provide protection to a certain extent, they are not absolutely safe.
When it comes to the protective ability of bulletproof vests, it depends on several factors such as the type and thickness of the materials used, the manufacturing process of the vest, etc. Different bulletproof vests may have different protective abilities against different types of bullets. Generally speaking, bulletproof vests can defend against bullets from handguns and rifles, providing a high level of protection against common handgun and rifle calibers. However, for larger calibers and higher velocity bullets, the protective effect of bulletproof vests may be reduced.
It is worth noting that although bulletproof vests can provide protection to a certain extent, they are not absolutely safe. High-speed, high-energy bullets may still penetrate bulletproof vests, causing injury. Additionally, the protective ability of bulletproof vests may decrease over time and with increased frequency of use, so timely replacement and maintenance of bulletproof vests are also crucial.