How do you convert to booster seat?

You can use the car seat as a "booster" by using the shoulder harness straps on the upper sides to hold your Car Seat Belt over your child - the seat "boosts" them up so that the seat belt crosses and restrains them at a safe level. This may be confused with other "backless-booster seats", which this model does NOT convert to.

Children are not ready to be in a regular lap/shoulder seatbelt until:

• They are tall enough so that their legs bend at the knees at the edge of the seat; and
• They are mature enough to remain seated with their backs flat against the back of the seat and not slouch; and
• The lap belt sits high on the thighs or low on the hips (NOT on their tummy!); and
• The shoulder belt crosses the shoulder and chest (NOT on their arms or neck!); and

Each passenger must have their own lap and shoulder belt! Never allow children to share a seatbelt. Some organizations will also give limits like 80 or 100 pounds, 4'9" in height or 8 years old. These are rough guidelines, not absolute limits. The criteria above are most important.

Its only "conversion" is to use the car seat belt rather than the attached seat harness (which you would NOT use with the seat belt). You would need to check the user guide to see how to correctly thread the seat belt thru these staps and at what age and size they recommend using this type of restraint for....