Just in time for Christmas shopping, the FBI cautioning people to be on the lookout for counterfeit Cub’s gear.

The bureau says that the skyrocketing demand for the team’s jerseys, hats, and autographs create an opportunity for criminals to pass off phony merchandise.

Prospective buyers are being told to research carefully what they are looking to buy, compare prices, and pay attention to fine details on clothing, such as stitching patterns.