Chainsaw Safety Pants - which ones are best? Will any actually prevent blade contact?

I saw someone cut into his leg with a chainsaw yesterday, all the way to the bone. Today I am looking at chainsaw safety pants online. Some have DuPont Cordura, Some have Ambush, some have Engtex, and one (Work Safe Chainsaw pants, online at Bailey's) have KEVLAR. I found some info that the material is designed to rip apart and clog the chainsaw sprocket so it stops running, but you could still get cut, just maybe not as long. I can't find info on the KEVLAR to find out if it is like the bullet stopping kind of KEVLAR, and thus would fully eliminate contact from the chainsaw blade, or is it like the fabric KEVLAR that is protective, but not much more effective than the other materials. Does anyone know anyhting about this? What is the best material to have, the best brand, the cheapest place to buy, and any other info that you think would be useful. Thanks for responding. Seeing that really freaked me out!|||Dupont Cordura is the covering. It is there to keep the insides clean. All chaps and pants I've see have this as a cover or at least a middle layer. Kevlar is the same basic material as the bullet stopping kind but used in a different fashion(we used it to make sails). All pants I have seen use the same principle:clog the saw. As far as I can tell any good quality pants or chaps will work well.|||well it all depends on if your going into a psycho rage and killing pedestrians..............or if you are trying to make another chainsaw massacre....... i would suggest kevlar for the killing and a fake chainsaw for the rest|||How often are you using a chainsaw? The best way to prevent cutting yourself isnt pants. It is using the chainsaw correctly. Chances are the person you saw did something he wasnt suposed to. If you are operating under the guidelines than the cut wouldnt be to the bone and any pair of CSP will work perfectly.|||The best way to prevent cuts from a chainsaw is a sharp blade, and knowledge to use is correctly and safely. Unless you are wearing an armour suit like in the middle ages, I know of no pants that will prevent cuts from one.