Why can scissors cut my kevlar hood?

I bought this item: http://cgi.ebay.com/HATCH-HEAVYWEIGHT-KEVLAR-SWAT-POLICE-FIRE-HOOD-KH4500-/350281078909?pt=US_CSA_MWA_Gloves_Mittens&hash=item518e61187d and tested its strength as soon as it arrived. I tried to slash(small sawing motion) it with a pocket knife and another blade(both can aren't super sharp but they can cut plastic, thread, string, cloth, ect). They hood took no damage at all. So lastly I attempted to make a small cut with a pair of scissors and it cut like paper. I'm confused? I was hoping someone would know why this happened and if the item is actually slash proof. I know it can't do anything for a stab but I expected this hood to be able to take a glancing slash. I wanted to know for sure. Thanks in advance!