U.S. Customs and Border Protection officers in Norfolk seized counterfeit — and possibly dangerous — versions of one of the holiday seasons hottest gift items on Wednesday: hoverboards.

The 445 hoverboards with a suggested retail price of $170,000 had counterfeit “Samsung” trademarks and fake batteries that could pose a hazard to riders, according to the CPB. The items were manufactured in China and seized from a shipping container in the Port of Norfolk during an inspection.

Safety concerns have emerged about the two-wheeled, motorized platforms after reports of fires possibly caused by substandard or counterfeit batteries in some hoverboards, according to CBP.