i'm very sure this has been asked before, however, i can not find the thread. Do you guys know were to get the wanderlei silva skull caps?
BrazilianFightWear.com is where I got mine and Casca-Grossa.com also said they have them in. Note that it isn't white, but actually a grey that looks like it is worn, it is done on purpose, but just wanted to give you a heads up.