My twins will be 5 at the end of November and I just noticed that they have outgrown our auxillery car seats in my husband's car. They are 46 inches tall and 47lbs each.

My question is- do I buy boosters? I know that they fit the recommendations (more than 4 years old, more than 40 lbs, can sit properly in the seat for the whole car trip), but I feel funny about it, possibly because I might be denying that my babies can ride without a 5 point. They will only be going for short trips with him- all of the long trips will be in my car in 5 points they still fit into.