What are the top-rated booster car seats for safety and comfort?

Backless belt-positioning booster for children 40-100 lb and 43-57 in tall, with front-adjust LATCH, removable machine-washable pad, cup holder and hideaway storage. Lightweight (about 5.56 lb) and easy to move between vehicles, it uses a shoulder belt positioner for proper belt fit and Graco ProtectPlus engineered crash protection. Suits families wanting an affordable, portable backless booster with LATCH.

A highback-to-backless booster with DuoGuard side-impact protection, zip-off washable 3D AirMesh covers, an optional zip-on leg rest and 10-position adjustable headrest; converts to a backless booster for older kids. Suits families wanting a well-reviewed, comfortable booster with easy installation and premium LATCH with quick-release.

The Britax HighPoint 2-Stage is a highback-to-backless belt-positioning booster that converts from high-back (40-120 lbs, 44-63 in) to backless (48-120 lbs, 46-63 in). It features a 10-position quick-adjust headrest, SecureGuard lap-belt positioner, ISOFLEX/Quick-Push lower connectors, and machine-washable SafeWash cover. It suits taller children with an extended height limit up to 63 in and a seated shoulder height up to 21.5 in.

The Viaggio Flex 120 is a narrow, high-back belt-positioning booster with 4D adjustability (headrest, backrest, side wings, recline), rigid LATCH, EPS energy-absorbing foam, and foldable design for travel. It fits children 40-120 lbs and up to 63 in tall, and includes stowable cup holders and aluminum-reinforced backrest for side-impact protection. Suited for families needing a slim, adjustable booster that grows with the child.

The Diono Monterey 4DXT is a 2-in-1 highback-to-backless belt-positioning booster with adjustable headrest (11 positions), expandable torso width, LATCH connectors, and substantial side-impact protection. It supports children 40-120 lb and up to 63 in tall, and is relatively wide and heavy, suited for larger children and vehicles with roomy rear seats.