for children 22-120 lbs. / 1 - 12 years


Platinum Evolve 3-in-1 Combination Booster Car Seat (Imagination)

$170.00 $134.75

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The Platinum Evolve 3-in-1 combination seat is fashioned with premium materials and delightful details like temperature-regulating fabric that balances your child’s body temperature, and buckle pockets that help protect against hot buckle burns.

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Trusted by Millions of Families for Nearly a Century

Made in USA with US & Global Components

Peace of Mind:

Expiration: 8 years

Warranty: 90 days

Returns: 30 days


Installation Manuals: Browse »

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Why You’ll Love it

Evolve booster seat: a natural selection...

Combining three ways to ride, the Evolve booster seat provides extended modes to fit your growing child longer.

Product Details

Child Specs (22-120lbs)


  • Weight: 22 - 65 lbs. (10 - 29.4 kg.)
  • Height: 28 - 50 in. (71–127 cm.)
  • Age: The child is one year old or older
  • Fit: The tops of child’s ears are at (or below) the top of the child restraint headrest.


  • Weight: 40 - 120 lbs. (18 - 54.4 kg.)
  • Height: 44 - 57 in. (112–145 cm.)
  • Age: combination-sb-age
  • Fit: combination-sb-fit


  • Weight: 40 - 120 lbs. (18 - 54.4 kg.)
  • Height: 44 - 57 in. (112 - 145 cm.)
  • Age: At least four years old
  • Fit: Ears below the top of the vehicle seat headrest.

Product & Shipping Specs

  • Dimensions: 29 x 19.5 x 20.75 inches
  • Package Width: 20
  • Package Weight: 24
  • Package Depth: 20
  • Package Height: 29


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
  • Certified For Use In Aircraft: When used with the internal 5-point harness this restraint meets FAA Inversion requirements for airplane use.
  • 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.
PLATINUM EVOLVE IMAGINATION is rated 4.6 out of 5 by 14.
Rated 5 out of 5 by from Favorite car seat We bought this car seat for our daughter when she was able to go front facing. We love how snug she fit in it. We have been able to use it for every stage and the car seat has held up perfectly.
Date published: 2020-01-31
Rated 5 out of 5 by from great booster seat I have been using this booster seat for my baby for awhile now. I love it so much it's nice and comfortable and he can sleep in it and not have to worry about anything. I also love the color of the seat it is beautiful!
Date published: 2019-11-15
Rated 5 out of 5 by from I absolutely love this carseat! After someone broke into my car and stole my kids' seats, I bought two of these. Not only do they have all of the safety features I look for, but this seat also has a chime that alerts you that the child is in the car (so you won't forget them) and if they open the safety harness. My oldest loves the seat and thinks it's super comfy. He also loves the chime. Totally recommend to anyone in the market for a great seat that evolves with your child!
Date published: 2019-09-01
Rated 4 out of 5 by from Great seat, missing material as pictured. The seat is great, easy to use, easy to install, and comfortable for the children. My only complaint is the lack of comfort/shoulder pads on the five point harness portion. They are in the picture but were not on either of the two car seats I ordered.
Date published: 2019-07-25
Rated 5 out of 5 by from Love this car seat! We love this car seat in my car! It looks nice and trendy. It was so much easier to install into my car then other car seats I’ve had in the past. There’s multiple selections of colors that are super cute. It was so hard to choose just one! Honestly I think the best thing about this car seat is that it’s a 3 in 1 so we don’t have to worry about buying another car seat until this one is no good anymore. Definitely our favorite car seat ever!!
Date published: 2019-03-28
Rated 5 out of 5 by from Love this seat! Out of all 4 of our Evenflo seats, this is our favorite! We love how it will grow with our 4 year old. It’s comfy and easy to install too! When our younger two get to this stage. We will be purchasing 2 more! Thank you Evenflo for keeping all my kids safe in the car!
Date published: 2019-03-28
Rated 5 out of 5 by from Amazing for toddlers My 2 year old has this seat and it is so comfortable for him. The straps fit snug and the headrest adjusts for his height. He loves that he has 2 cup holders because he uses one for his drink and the other to hold whichever little toy he decides to bring with us. The headrest has a thick cushion to protect your little ones head. It is easy to take apart to wash and easily put back together. I have 3 kids and this is the 1st evenflo carseat we use and I honestly prefer it over the other brands I have.
Date published: 2019-03-28
Rated 5 out of 5 by from Nice solid car seat. It is a little bit of a pain to install in smaller cars and is bulky, but it feels super sturdy and grows nicely with kids.
Date published: 2019-02-07
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