✈Usage Instructions: In addition to the car seat cart, two straps and two ratchet straps are included. It is recommended to use all of them to secure the car seat. Use one ratchet strap to fasten around the base, and the other to secure the backrest. If the backrest of the car seat is reclined or slanted, lift the latch, rotate the tow bar, and then fasten the strap ✈Travel Helper: When compatible, this car seat dolly allows parents to roll heavy car seats through airports instead of carrying them. Suitable for air travel, layovers, and long terminal walks, also functions as a luggage cart. Once on the plane, it is best to detach the car seat first to avoid it getting stuck in the aisle ✈Life Helper: This folding hand truck helps with everyday tasks, such as carrying grocery bags, books, cardboard boxes, water bottles, musical instruments, and other parcels or household items. Convenient for transporting items from your car to your home after shopping. Can also be used as a car seat cart for airport or car seat carrier for airport ⚠Compatibility Requirements: The bottom of the car seat should be flat. Designed for car seats with a base width within 45cm and sufficient bottom clearance for straps. Car seats outside this range will not fit. Measuring before purchase is strongly recommended. Check if the bottom of the car seat is flat before purchasing ⚠Important Safety Notes: Please ensure no one is sitting on the seat when using car seat dolly to roll the car seat. When using the foldable trolley, you must use the two ratchet straps as they are essential for securing the car seat. If the backrest of the car seat is reclined, lift the latch, rotate the tow bar, and then fasten the straps Compact and Portable Design: Features a foldable construction that allows for easy storage in your vehicle or luggage when not in use, making it convenient to carry and store during your travels without taking up excessive space Make airport travel easier with this Car Seat Travel Cart. Equipped with sturdy wheels and an adjustable handle, this Car Seat Dolly for Airport lets you effortlessly roll your car seat through airport terminals. No more struggling with bulky car seats—simply attach it to the Car Seat Carrier for Airport and roll it to your destination. The smooth-rolling wheels glide seamlessly over all surfaces, making it easy to navigate through airports, curbsides, and parking lots. This Car Seat Trolley for Airport keeps your car seat secure, while padded straps prevent slipping or shifting during transport. Once you reach your destination, the carrier folds down for compact storage in your vehicle. Enjoy stress-free travel with this essential Car Seat Dolly, perfect for airplane travel and everyday use. Whether you’re using it as a Car Seat Roller for Airport or a Car Seat Cart for Airport, this is the must-have accessory for hassle-free travel.