A rating that reflects a booster seat's ability to correctly ... and the transition between highback and backless modes where applicable. The Britax Highpoint booster provides far better belt ...

The Britax One4Life baseless car seat flexes ... As your child grows, the Graco 4Ever DLX transforms from a rear-facing seat to a backless booster. With a large weight range from 4 to 120 pounds ...

Most of these are backless boosters ... Institute's test protocol and booster seat fixture to help evaluate belt fit on the new boosters they're designing. Britax Child Safety Inc.

The Britax Skyline 2-Stage Belt-Positioning Booster Car Seat offers a full back but has a lower profile than a traditional car seat, and a slim Graco backless booster is just $22. To let kids ...