Yes.
If the vest has not been shot or stabbed or otherwise forceably attacked, the synthetic fibres in the vest will slowly degrade.
Most manufacturers suggest at maximum lifespan of 5 years in normal use. Storing the vest in a place with high humidity, constant exposure to direct sunlight and moderate to high heat will also shorten the lifespan of the vest considerably.
The above applies to most vests sold for civilian and police work in the USA. I do not know the standards applied to US Military equipment, but it would unlikely be any longer, and likely much shorter due to the considerably tougher environment most military vests find themselves used in.
After ANY hit or stab, the vest should be replaced.
The standard bullet proof vest is not stab proof, however there are some bullet proof vests that are. These stab-proof vests have a wire mesh on the outside, or a similar material.
You can purchase bullet proof vests at bulletproofme. It is a special website where you can purchase bullet proof vests. They specialize in those fields, and you can even talk to an expert.
There are several types of bullet proof vests that have been invented. For details, see the attached link.
there ain't no law bout bullet proof vests in Kentucky!
Bullet proof Vests
yes
YES
Bullet proof vests are made from many layers of woven,laminated fibers ,metal and ceramic plates.
How Do They Do It - 2006 Bullet Proof Vests Robots Formation Skydivers 4-1 was released on: USA: 4 April 2007
yes...to wear, buy, and own, but not for a felon.
Many, but no-one kept count.
Yes. Contrary to popular belief, bullet proof vests are legal and available to the general public. It is illegal to wear a BPV while committing a crime in most states, and a few states prohibit possession of BPVs by felons.