I bought two Nautilus car seats for my 4 year old twins. The ONLY downside to this car seat that I have found is that the seats are heavy. The belts are easy to adjust, my kids are totally comfortable in these seats, we won't have to replace the seats as they go up to 100 lbs. The fabric is easy to wipe clean. We are now considering getting a 3rd Nautilus for our 5 1/2 year old. I would recommend this seat to anyone. I wish they had been around when my kids were babies. I would have saved a lot of money on car seats!