Is bulletproof vest stab proof?

The question needs to be answered from bulletproof mechanism and stab proof mechanism.

The now days popular soft bulletproof materials are Aramid UD and PE UD, they are fabrics that made of Unidirectional fibers. Mainly through the deformation of fibers, the energy of the bullet is absorbed to achieve bulletproof purposes. When higher powered rifles, AP bullets, hard ceramic bulletproof plates will destroy the bullets to stop the further penetration.

Anti-stab material is not energy absorption, but to prevent blade/spike penetration. So both materials need different high strength to target the 2 different weapons.

Shenzhou FC stab proof materials have excellent performance on reducing BFD (Back Face Deformation) of bulletproof materials, so they are a good choice for Bulletproof and stab proof vest.