Our daughter just reached the 40 lbs and before this loved her Britax marathon car seat. With our new son soon needing her seat I went on a search to find a good booster. This was recommended by a friend and it is great. Great material, light and easy to move between vehicle. She says its very comfortable. She loves the arm rests. The only thing we miss from our car seat is that the car seat seemed to tilt back more so when she fell asleep her head would rest against the side. This booster - as they all seem too - sits upright so when she falls asleep her head tilts forward. Trying to figure out a pillow that may help. Great seat, great price - plan to recommend it to my friends.