http://www.mmafighting.com/2016/5/14/11676388/fabricio-werdum-s-happy-face-mask-banned-inside-the-stadium-for-ufc
Werdum handed out 45k free masks for the fans to wear during his fight. I'm sure you have seen them during this past weeks activities. UFC banned them and Werdum isn't happy about it.
LOL SERIOUSLY? 
Isn't there a sponsor on them? That's probably the reason.
They never let us have nice things
Is this for real? Did they quote a bullshit Health and Safety violation or something?
They really are sucking all the personality out of the sport.
They should bring in vuvuzelas instead Dana hates those fucking things.
These are EVERYWHERE in Curitiba
That's not really good for the UFC to do to their own HW champion.
Pretty sure Reebok don't make masks. 
I wonder their reasoning. Those masks are hilarious and great for Werdum's brand. But Zuffa has ALWAYS been about diminishing individual appeal in favor of soulless robot fighters
Gotta be because of the sponsor on the headband.
They should have had Reebok make the Werdum face masks... In which case they would have been pictures of JDS. #ReebokAsFuck
NorthernIrishZombie - Gotta be because of the sponsor on the headband.yup, you're most likely right.
i concur with sponsor on headband answer
ranier wolfcastle -...which... that kind of makes the UFC right.
i concur with sponsor on headband answer
It creates an unfair psychological advantage for Werdum. I'm pretty sure walking out past 10,000 people that look like your opponent might create doubts or expose fears. I'm not saying it should be banned, I just think it can be abused as a strong weapon.
Pretty sure ufc said they can all have sponsors just not in the cage so...
Sponsor on the headband for sure
Good I hate that ugly face he makes. He is like a child and he makes the UFC look stupid with it. I hope that Stipe beats his ass.