Are there different types of boosters? Which type of booster is right for my child?  Which type is right for my vehicle? 

There are three different types of booster seats: Backless boosters, High-Backed boosters, and Combination seats.  Read on for a description of each.  Also note the Booster Warnings section at the bottom of this page for general information.  Of course you should always read both your booster seat instruction manual and your vehicle owner's manual before installing or using a booster. 

Backless Boosters
These are specialized cushions children sit on.  The booster raises the child up off the vehcile seat, leading to a better seat belt fit.  Backless boosters all have seat belt guides which keep the seat belt over the correct place on the child's body. Sometimes armrests serve as the seat belt guides, other seats use metal tubes or rings.  In this photo, you can see the seat belt runs through two red rings on either side of the booster.

• Lightweight, compact, and usually inexpensive...so perfect for playdates and travel.
• Often preferred by older children as they appear less "babyish"
• Optional shoulder belt adjuster guide. However, if the shoulder belt is not scratching the child's neck, it's not necessary to use the belt guide.

Note: The vehicle seat MUST come up to your child's ears in order to use a backless booster.  This is because the top of the ears is the same height as the bottom of the skull, which needs protection in a crash.  If the seat back does not come up to the top of the ears/bottom of the skull, the child is more likely to suffer whiplash injuries in a crash.  If your child's ears come up past the vehicle seat, he should use a high-back booster, where the high back of the booster itself will prevent whiplash.

High Back Boosters (BPB/Combo)

There are two types of High Back boosters: Belt Positioning Boosters (BPB) and Combination Seats.

Belt Positioning Boosters (BPB):  Like a backless booster but also has a back and head support which goes up past the child's ears.  Normally used as a high-back booster, many of these models also allow you to remove the back, turning the seat into a backless booster – this option is very helpful for travel and for storage.

Combination: Functions either as a car seat with a 5-point harness for children up to 40 pounds (a few models go to 50 or 65lbs) OR a belt positioning booster for kids over 40 pounds (you simply remove the harness and use the vehicle’s safety belt to secure the child). The back is usually not removable on these models.

• A high-back booster with an adjustable headrest will usually give the best positioning of the shoulder belt.
• Provides necessary head support in vehicles with low seat backs (backless boosters cannot do this, as mentioned in the Note above).
• Better than a backless booster at keeping a sleeping child placed properly in the safety belt.
• According to one study, high-back boosters were more beneficial in side impacts when compared with either backless boosters or safety belts alone – providing 59% better protection. When selecting a high-back booster, look for one with deep side wings that also stick out as close to perpendicular as possible from the back of the booster. This will likely improve protection in a side-impact crash by better containing the child’s head and torso.

Booster Warnings

• Do not use a booster seat where the seat belt does not touch your child's shoulders and chest.
•  Do not use a booster seat where the lap belt is not touching the tops of the child’s thighs
• When selecting a high-back booster, make sure to choose one with shoulder belt guides that allow the shoulder belt to slide freely.  Some shoulder belt guides restrict the retraction of the shoulder belt - when the child leans forward, the shoulder belt pulls forward, but when the child leans back the shoulder belt does not go back in and therefore stays very loose. This is dangerous.
• Be sure that the shoulder belt guide, if present, does not pull the belt off the shoulder and onto the arm.  If this happens on your child’s booster, try using the booster without placing the shoulder belt in the guide. If the shoulder belt is not scratching the neck, it is not necessary to use the belt guide.  If you must use the guide, lock the safety belt by slowly pulling the shoulder belt out all the way before placing the belt in the guide. This locking mode – found in most vehicles made after 1995 - will prevent the child from leaning forward and placing any slack in the belt.
  
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