Polyester 4 Swivel Wheels: YOREPEK car seat travel bag designed with four swivel wheels, which makes you easily, multi-directional upright rolling without needing to tilt. Together with the reinforced handle and padded structure design, your baby car seat is more convenient to carry, push or pull in any direction with one hand Carseat Compatibility: The car seat travel backpack has a size of 17 x 17 x 29 inches and can easily accommodate major brands of car seat. But it doesn't fit for Evenflo Revolve360, Chicco NextFit/Fit360 ClearTex, Maxi-Cosi Pria All-in-one, UppaBaby Knox, or Graco EasyTurn 360/4Ever DLX Protective Padding: The inner wings, sides, top, back, carry handles and backpack straps are padded to provide protection for your valuable car seat. Adjustable padded backpack straps make car seat for travel easier to carry Heavy Duty Material: The car seat backpack is made of water resistant polyester fiber, and the baby car seat cushion is easy to clean. The car seat bag for air travel has 4 wheels at the bottom to protect the infant car seat from the dirt of the airport terminal Safety Design: There is a special backpack strap storage design at the back of the car seat roller for airport to avoid dragging backpack strap on the ground. Set double slider zipper, name card slot, elastic pockets on both sides, you can also easily pack or fold the car seat into a flat shape for next time Keep your car seat safe and mobile with the YOREPEK Car Seat Travel Bag, designed for hassle-free travel.    Featuring 4 smooth-swivel wheels, this bag allows effortless multi-directional rolling without tilting—just push or pull with one hand using the reinforced handle.    The padded interior (including wings, sides, top, and straps) ensures maximum protection, while adjustable backpack straps offer hands-free carrying when needed. Compatible with most major car seat brands (up to 17" x 17" x 29"), though it does not fit for Evenflo Revolve360, Chicco NextFit/Fit360 ClearTex, Maxi-Cosi Pria All-in-one, UppaBaby Knox, or Graco EasyTurn 360/4Ever DLX.    Crafted from heavy-duty, water-resistant polyester, the bag resists dirt and is easy to clean—ideal for airport floors.