Cleto Reyes are a combination of horse hair and foam. and yeah they agreed on this a while ago. But he did the exact same thing with Maidana in the first fight, everything was agreed upon but the day before the fight Mayweather wouldn't let him wear his gloves (that also was a combination of horse hair and foam). He would let him wear Cleto Reyes either. Apparently Mayweather paid him X amount of dollars not to, so Maidana didn't wear them. Obviously didn't work this time around. What Mayweather paid Maidana was close to his total purse so it's easy to buy someone out like Maidana who's never seen that kind of money before, but since Pac is making so much he's not going to care about an extra million or whatever.
Apparently Bob Arum blew a gasket last night over the glove issue and is on a war path lol (Chris Mannix of ESPN is the source).