The NBA has issued a warning to Cavaliers fans to be on the lookout for an increase in counterfeit apparel and other merchandise.

The number of counterfeit items typically increases during the postseason, according to the Coalition to Advance the Protection of Sports logos (CAPS).

"The 2009 NBA Conference Finals is an event that Cavaliers fans will want to remember for many years to come, but a counterfeit T-shirt is not really a keepsake if it contains a typo or shrinks three sizes when you put it in the laundry," said Ayala Deutsch, senior vice president and chief intellectual-property counsel for the NBA.