While some motor vehicle seat covers don’t have a slot with the seat belt lock, these covers do for all the seats. They’re airbag-compatible. He's a thicc little one and now weighs in at a cool 18 pounds at three months (Jets, hit us up, you can use his expertise!) https://greenbrierkennelclubcatto42851.is-blog.com/39350347/infant-car-seats-from-the-80s-an-overview