I give this a 4 star , it be genius , but it be expensive -lrb- it be really just a t-bar strap that you could probably use you own belt , so for the price it get 4 instead of 5 star -rrb- . it work great for we to wheel around we toddler in the airport , easy to take apart during the security search , and great to carry around in you purse\/diaper bag until landing where you 'll have to do it all over again until you get to the car . could not have manage to have she Britax Marathon carseat -lrb- lug it around -rrb- w\/o this unique tool ! I love the travel toddler ! it be easy to undo and attach , it be super quick through the security line & I have no complaint except for the cost of the thing . much cheaper than other product , but for around $ 18 all you be really get be a ` t ' - strap that connect to the seat and around you carry-on luggage , which probably cost 50cent to make !! then again , it be SOOOO WORTH IT , when we travel !! if you know a friend who have one , save yourself some cash & borrow it !!