10 Best Harness Booster of October 2025

• Three seats in one: 5 Point harnessed car seat, high back belt positioning booster seat and backless belt positioning booster car seat
• Converts from 5 Point harnessed car seat (22 to 65 pounds) to high back belt positioning booster (30 to 100 pounds) to backless belt positioning booster (40 to 100 pounds)
• Simply Safe Adjust Harness System adjusts the height of Your harness and headrest, in one motion, to ensure that Your child is always properly Secured; Harness straps may be spot cleaned
• The AAP and NHTSA recommend that children should use the built in harness system until they reach the Maximum forward facing weight or height for their car seat, and after reaching the Maximum forward facing weight or height
• Side Impact Tested; New Car Assessment Program (NCAP) peak crash force approximately 2X car seat Standard; Extreme Car Interior Temperatures; Buckle may be cleaned with a damp cloth

Graco

• 2-in-1 Booster - Forward-facing harness (22-50lbs) converts to belt-positioning booster (40-110lbs)
• Dual Cup Holders: Two built-in cup holders keep drinks and snacks within reach - allows the driver to stay focused on the road
• Upfront Harness Adjust: Central, front access to the harness adjuster provides an easy way to adjust child's harness for an accurate, snug fit
• Shoulder Belt Guide: Automatically positions the vehicle belt in the proper position for your child
• Easy to Clean - Wipeable and machine-washable car seat pad removes for easy cleaning

Evenflo

• Converts from 5-point harness to belt-positioning booster
• Duo Guard side-impact protection for head and torso, and steel-reinforced frame
• 4-position recline, 9-position headrest, and deep Ergo Boost seat with padding/contour
• Premium LATCH connectors and Lock Sure belt-tightening system for easy installation
• 2 dishwasher-safe Cup Folders with push-button removal. Assembled Product Dimensions: 21 inches x 27 inches x 18 inches
• Product Depth (Footprint): 20"

Chicco

• The Cosco Finale DX 2 in 1 Combination Booster Car Seat features a 5 point safety harness that converts to a belt positioning booster seat as your child grows, IIHS Best Bet rating for use in booster mode
• With extended use in both of its 2 modes, this car seat accommodates children from 30 to 65 pounds forward facing with a harness, and as a belt positioning booster for toddlers and older kids 40 to 100 pounds
• An included removable and dishwasher safe cup holder on the side of this car seat allows your child to easily reach for their favorite drink or snack. Remove all dirt, mud and other debris using a damp cloth
• Remove the easy to clean booster car seat pad and toss it into the washing machine and then your dryer for stress free cleaning
• This booster car seat meets or exceeds federal, ASTM, and JPMA safety standards and includes a 1 year limited warranty
• For more than 70 years, Cosco has been a leading children’s products brand recognized for its dedication to safety and value; From bouncers to car seats, swings to strollers, and high chairs to play yards, Cosco's essential baby products feature solid value and smart design
• NOTE: Kindly refer the User Manual which is available below for guidance
• Perfect for growing families and carpools, this lightweight seat is easy to move from car to car; 3 of these car seats are designed to fit side by side across the back seat of most vehicles

Cosco

• Trusted quality, upgraded design: Looking for pioneer? Grow with you is our newest harness to booster car seat
• 2 in 1 booster seat: Easily transitions from forward facing harness mode to belt positioning booster mode as your child grows from toddler to big kid
• Premium fabrics: Nap friendly padding and fabrics for superior comfort & a quiet ride
• More comfort: Soft comfort pads keep your child's neck from rubbing against the harness strap. Gender - unisex
• Surrounded in safety: 2 layers of side impact protection, steel frame, impact absorbing base and forward movement reducing v shaped tether

BRITAX

• This 2-In-1 combination booster car seat fitting children from 22-110 pounds. converts from a 5-point harnessed to belt-positioning car seat allowing for extended use for your child
• The chase LX combination booster car seat helps protect harnessed children from 22-40 pounds (Height: 28 - 50 Inches) and belt-positioned children from 40-110 pounds (Height: 43.3 - 57 Inches); Age: At least four years of age
• This lightweight combination booster car seat comes equipped for latch systems allowing for easy installation and transfer between multiple vehicles. Do not use abrasive cleaners or solvents.
• Designed and tested for both side impact and structural integrity at energy levels approximately 2 times the Federal Crash Test Standards and the harness can be wiped clean with mild soap and water, allow harness to air dry
• Integrated cup holders keep drinks close without increasing the width of the car seat, allowing multiple car seats to fit your back seat. Harness booster age at least two years of age. Fit tip is child's ears are below top of child restraint headrest. Seat belt booster age at least four years of age

Evenflo

• One-hand, 5-position adjustable headrest is easy to use and adapts for your growing child
• Keeps your child in a booster up to 120 pounds for longevity of use, in keeping with American Academy of Pediatrics' recommendations
• Fuss Free harness storage holds the buckle out of the way, so it’s easy to get baby in and out. Harness straps may be spot cleaned
• Body support helps keep your child comfy.5-Point Harness Mode Height:27-49 inches
• Integrated harness storage compartment holds unused harness straps while in the belt positioning booster mode

GRACO

• Converts from 5-point harness to belt-positioning booster
• Zip-off backrest/seat cushions for easy cleaning, extended durability and extra padding
• Duo guard side-impact protection for head and torso, and steel-reinforced frame
• 4-Position recline, 9-position headrest, and deep ergonomic seat with padding/contour
• Premium connectors and lock Sure belt-tightening system for easy installation

Chicco

• KEEP KIDS SAFE THROUGH TWO STAGES - The Cosco Highback Booster car seat takes your child from 22 lbs. to 80 lbs. with its two different modes. Use the 5-point harness for smaller children and convert it to a belt-positioning booster seat as they grow.
• 2-IN-1 SAFETY SEAT - The Highback Booster is LATCH equipped and features a 5-point harness that can be adjusted from the front. As the child grows, simply remove the harness to use it as a belt-positioning booster car seat.
• SHOULDER BELT GUIDES - While in belt-positioning booster seat mode, the shoulder belt guides provide parents with two options for threading the vehicle seat belt to give children of different heights a better fit.
• MACHINE WASHABLE SEAT FABRIC -Messes happen. When they do, you can easily remove the seat pad and clean it in a washing machine and dryer.
• REMOVABLE AND DISHWASHER-SAFE CUP HOLDER - The removable and dishwasher-safe cup holder allows for easy cleanup of spills.

Cosco

• Extended Use: forward-facing with harness, 30-65 pounds and Belt-positioning Booster, 40-120 pounds
• Designed to fit 3 ACROSS in most vehicles - Great for growing families and car pools
• Lightweight and easy to move from car to car
• Deluxe fabric gives kids a comfy ride
• Adjustable head pillow allows for customizable support

Safety 1st