Big Kid®

Big Kid Highback 2-in-1 Belt-Positioning Booster Car Seat (Static Black)


Big Kid Highback 2-in-1 Belt-Positioning Booster Car Seat (Static Black)
for children 40-110 lbs. / 4 years and up

Big Kid®

Big Kid Highback 2-in-1 Belt-Positioning Booster Car Seat (Static Black)


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Static Black



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Go big or go home...

Designed with an elevated seat, six height settings, and upper belt guides, the Big Kid 2-in-1 helps you ensure your vehicle's seat belt will be properly positioned across your child's chest and legs. The Big Kid also converts to a backless booster allowing you to keep your growing child safer, longer.

Why you'll love it

Offering 2 modes of forward-facing use, the Evenflo® Big Kid® LX High-Back Booster is designed for older kids ready to use the vehicle’s belt, and need an extra boost for safe seating in the vehicle. The included belt clip helps safely position the vehicle’s belt at your child’s shoulder. 6 height positions offer a better fit as they grow, and can be easily adjusted with one hand. Once they are ready, the back quickly removes for a no back booster. Dual, integrated cup holders keep snacks and drinks close, allowing the driver to stay focused on the road. The comfortable, padded seat is great for long journeys, and is removable and machine-washable for easy cleaning. A variety of cool colors and patterns allow your growing child to express their individuality. Great for families on-the-go, this booster is lightweight and easy to move from vehicle to vehicle.



  • 2 Modes of Use: Seat easily transitions from highback to no back booster
  • Extended Use: 6 headrest adjustments accommodate growing children longer
  • Safety for Older Kids: Giving them the extra boost they need for proper vehicle belt fit
  • Dual, Integrated Cup Holders: 2 Cup holders are built into the seat, keeping drinks and snacks close and allowing the driver to stay focused on the road
  • 6 Position Height Adjustment: Easily adjust the height with one hand, offering a better fit for your child as they grow
  • Correct Positioning: The included belt clip facilitates correct vehicle belt positioning around your child's shoulder
  • Comfy Seat Pad: The contoured padding is great for long journeys
  • Easy To Clean: Removable seat pad is wipeable and machine-washable
  • Easy Vehicle to Vehicle: The lightweight booster is easy to move between vehicles, perfect for on-the-go families
  • Cool Colors: Let your big kid express their individuality with a variety of fun colors and patterns
  • Live Video Installation Support: Schedule an appointment to have a certified car seat safety technician guide you through a proper vehicle installation
  • Online Chat: Chat with our ParentLink® customer service experts online in real time

Evenflo is...

For 100 years, Evenflo has been a trusted source children products
Made in the USA with US + Global Components
Dedicated to design and engineering of products for real-life
Supported by ParentLink Consumer Care via phone, email, chat and video


Trusted by Millions of Families for Nearly a Century

Made in USA with US & Global Components

Peace of Mind:

Expiration: 6 years

Warranty: 90 days

Returns: 30 days


Download Installation Manual - English

Installation Manuals: Browse »

FREE Video Support: Book Now »

Product Details

Child Specs (40-110lbs)


  • Weight: 40 - 110 lbs. (13.6 - 49.8 kg.)
  • Height: 40 - 57 in. (102 - 145 cm.)
  • Age: At least four years of age
  • Fit: Child’s ears are below top of child restraint headrest.


  • Weight: 40-110 lbs. (18-49.8 kg.)
  • Height: 40 - 57 in. (102 - 145 cm.)
  • Age: At least four years of age
  • Fit: Top of child's ears are at or below the top of the vehicle seat headrest.


  • Age: At least four years of age

Product & Shipping Specs

  • Dimensions: 16W x 18D x 28H (inches)
  • Product Weight: 9.8 lbs.
  • Package Width: 16.5 in.
  • Package Weight: 8.07 lbs.
  • Package Depth: 11.25 in.
  • Package Height: 19.25 in.


Safety Testing

At Evenflo, we continue to go above and beyond government testing standards for car seats.

  • Side Impact Tested:Meets Evenflo’s proprietary side impact standards.
  • Designed and tested for structural integrity at energy levels approximately 2X the federal crash test standard.
  • FMVSS 213: Federal Motor Vehicle Safety Standards for Child Restraint Systems
  • FMVSS 302: Federal Motor Vehicle Safety Standards for Flammability of Interior Materials
  • CMVSS 302: Canada Motor Vehicle Safety Standard
  • CMVSS 213: Canada Motor Vehicle Safety Standard
  • Evenflo Temperature Testing: All current Evenflo car seats are tested for product integrity at both high and low temperatures.

Use & Care

Use & Care

Read all instructions and warnings on the product, product labels, and instruction manuals before use. Consult your vehicle owner’s manual to determine proper placement of child restraint in your vehicle and familiarize yourself with your vehicle’s components.

Browse Instruction Manuals »

Cleaning Instructions
  • DO NOT lubricate or immerse in water any part of this child restraint, unless rinsing is permitted
  • Plastic and metal parts may be wiped clean with mild soap and water and dried with a soft cloth. Do not use abrasive cleaners or solvents.
  • Take care not to damage any labels.
  • The harness can be wiped clean with mild soap and water. Allow harness to air dry.
  • Machine wash the seat pad separately in cold water, delicate cycle. Tumble dry 10 to 15 minutes on low heat.
  • Periodically inspect and clean the restraint's crotch buckle of food, liquids, and other debris to ensure proper latching. Place the buckle in a cup of warm water and gently agitate the buckle back and forth. Press the red button several times while the buckle is in the water. Do not submerge the harness strap. To avoid damage to the buckle, do not clean the buckle with soap or detergents and do not use a lubricant.

Evenflo Big Kid® LX Belt-Positioning Booster Product Tour

Our Big Kid high back boosters are designed for children 40-110 lbs. Once your child has reached the size and age requirements, you can transition into the no-back version of this seat.