High Back booster seats are belt positioning booster seats. Boosters have a back and head restraint. They do not have a built-in harness and thus, they must be used with the vehicle’s lap or shoulder seat belt. Some models of boosters may also convert to a backless booster.
Britax Parkway SGL is a high back booster is adjustable with the secure guard lap belt clip. Secure Guard lap belt clip prevent submarining. It has a removable back and can be converted into backless booster. Its back can be adjusted height-wise with the use of only one hand. It has dual cup holders. Britax Parkway SGL has Lower LATCH connectors.
Car seat experts in their car seat reviews 2016 mention a drawback of high back booster. Experts say that its lap belt clip may irritate some children. But the lap belt clip is optional and it can be removed if children are not comfortable with it.
Experts say that the above mentioned booster is a versatile booster that will grow with the growth of your child. It has maximum tall height settings, good head and torso support for sleeping and for enhanced protection in side-impact crashes. One can sleep peacefully in booster. Experts mention in their comments that only the SGL model has lower LATCH Connectors.
Other boosters recommended by experts are ChiccoKidFit and KidFit Zip. Both are backless and can be adjusted in 10 height positions. It has EPS foam for head rest and dual cup holders. Zip models also have machine washable zip-off pads. Car seat experts suggest these boosters for kids over 4 years old who weigh at least 40 lbs. and are mature enough to sit properly in it. Moreover, experts say that these boosters are economical and comfortable.