There'll be a large amount of old discussions on the different type of kevlar and wick material in general if you do a few searches going back a year or so at least.
The kevlar favoured by most juggling shops and HoP is a weave of kevlar and cotton, usually produced by a manufacturor who buys the pure kevlar of a main supplier.
There'll be people who disagree, but I really dislike the pure kevlar as it doesn't hold as much fuel and seems to come apart really easily. Not the kevlar itself, just the weave of the fsabirc, so its all in little strands by your feet...
The reason I'm saying all this is that when searching for wick, it pays to make sure you know what you are after or you could spend a long time chasing the wrong products... (As I did a while ago too) 
Cheers.
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Charles (AKA INFERNO)
newdolbel@hotmail.com
http://juggle.co.nz/fire/fire.html
[This message has been edited by Charles (edited 25 March 2002).]