I was looking for a compact luggage trolley that is strong and can carry a 20" bag or duffel bag. I occasionally use these carry-on bags on flights for extra volume. I also wanted one to mount the bag to so it could move down the 15" aisle if needed. This is the best cart I have found for this purpose. This trolley appears to be very solid and made entirely of steel. It's a bit heavier than the more compact carts, but the extra strength makes up for that for me. i can roll it loaded in packs, with one finger, and it rotates easily. This trolley moves easily through the airport on four wheels without tipping over. When folded, it should fit under most airplane seats. It's about 18 inches long and only about 10 inches wide. The rear wheels are 12 inches wide. There is a space under most airline seats that is approximately 17 inches deep and 20 inches wide. This trolley must fit sideways under the seat and leave space for hand luggage. The trolley platform is approximately 15 inches long (excluding the rear wheels) and can be extended to approximately 18 inches. When folded, the cart is about 4 inches thick. This is the best trolley I've found for air travel unless you're looking for a very compact or lightweight trolley.
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