Helmet Pads question.

[chaosticbunny]

I hear a lot of people using these kevlar helmet pads.

 

Is 1" too thick?

Would anyone suggest these are ok? All one pattern, comes in a 20 pack on this listing, will have several left over.

 

http://cgi.ebay.com/PASGT-ACH-MICH-Kevlar-helmet-1inch-Pad-lot-20-NEW-/390137123867?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item5ad5fc141b