I use this to go from Okinawa , Japan to the U.S. and back again . I like the fact this product be very affordable and work with my roll carry . it allow I to take my daughter 's Britax Marathon stroller -lrb- which she love -rrb- on the plane and allow she to sleep comfortably . however , the negative side to this for I be try to get through security check point . I have to disconnect\/disassemble the car seat from the carry on , take my daughter out of the car seat , then put the stroller and carry on through the x-ray machine . and then put it all back together again on the other side . with that say , it be still a great product . I get a whole lot of people tell I how `` together '' I seem to have everything .