Body armour which is stab resistant benefits front line professionals all over the world. The right kind of body armour is essential, and it should ensure that there are no restrictions on movement, and be up to the task of resisting a knife attack. Protection from cuts, stabs, and blunt trauma are all essential if you are to carry out your duty as a security professional, or front line police officer. The dangers faced by police officers mean that sometimes bullet and knife protection is combined into one vest, though generally the choice is either a bullet proof, or a stab proof vest.
Of course all body armour in effect is only stab resistant, not stab proof, and body armour is the most well used term for all kinds of protective armour. Levels of protection you may be looking for could include KR1 - The lowest certified level of knife resistance. Up to the task of resisting most knife based attacks from engineered blades. KR2 is even stronger in resisting attack, and KR3 is something you do not see often, mainly due to testing costs, and lack of demand. Some KR2 vests may offer similar protection to KR3, though without being certified it is hard to tell for sure.
Some people wear bespoke armour, and pay allot of money for custom suits of armour. Stab and even bullet proof full body armour is increasingly being purchased by wealthy individuals and improved riot armour is available which gives really good protection. Especially when combined with a suitable shield.
Other ratings include SP1, SP2 and SP3, and all relate to spike resistance. A very similar test to the knife resistance test, but using more of a spike is used. This test is not essential, as it is rare that you would be faced with such a weapon.