Best Booster With Harness

Graco TriRide 3-in-1 Reclining Car Seat, Clybourne - Rear & Forward Facing Car Seat, Highback Booster, Adjustable Headrest

Graco Tranzitions 3 in 1 Harness Booster Seat

Graco® TurboBooster® LX Backless Booster with Affix Latch | Backless Booster Seat for Big Kids Transitioning to Vehicle Seat Belt (Rio)

Chicco KidFit Zip Plus 2-in-1 Belt-Positioning Booster Car Seat, Backless and High Back Booster Seat, for Children aged 4 years and up and 40-100 lbs. | Taurus/Black/Grey

Safety 1st Grand 2-in-1 Booster Car Seat, Forward Facing Car Seat with Harness, High Back Booster Seat for Car, 30-65 Pounds and Belt-Positioning Booster, Car Seats, 40-100 Pounds, High Street

Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Jet Black

Britax Skyline 2-Stage Belt-Positioning Booster Car Seat, Dusk - Highback and Backless Seat

RideSafer - Small Black, Lightweight, Compact, Convenient Without Sacrificing Safety

Britax Grow with You Harness-2-Booster Car Seat, 2-in-1 High Back Booster, Quick-Adjust 5-Point Harness, Mod Black

Chicco MyFit Harness + Booster Car Seat, 5-Point Harness and High Back Seat, For children 25-100 lbs. | Fathom/Grey/Blue