UNDATED (WRKC) -- A company that makes child car seats recalls more than 33,000 of them because the harnesses aren't strong enough to meet federal safety standards. Combi USA recalled three types of seats made before January of 2013. The National Highway Traffic Safety Administration says the seat straps don't meet minimum strength requirements. If there's a crash, children may not be properly secured. A company spokesperson says the seats are still safe to use because the harness as a whole meets safety standards.