Fit4 4-in-1 Convertible Car Seat - Stratosphere in Stratosphere


Item No. 07079645830070

Fit4 4-in-1 Convertible Car Seat - Stratosphere

Sale Price$349.99


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Additional Information


Fit to Grow

Fit to Grow

FitKit System: 4-stage construction with easy-remove layers provide optimal fit and comfort for your child as they grow

Best in Class Headrest

Best in Class Headrest

10-position headrest and 5-point harness adjust in height simultaneously to accommodate maximum growth

9-Position Recline

9-Position Recline

ReclineSure offers a range of recline options at every stage to provide the best vehicle fit and maximize kid comfort

Easiest to Install

Easiest to Install

SuperCinch LATCH tightener uses 4 times the force to achieve a tight and secure fit using a fraction of the effort

Side-Impact Protection

Side-Impact Protection

A steel-reinforced frame and EPS energy-absorbing foam surround the head and torso throughout every stage

Space-Saving FIT

Space-Saving FIT

A slim design and CupFolders free up valuable space in the backseat

Seat Belt Installation

Seat Belt Installation

A secure installation using the vehicle seat belt with LockSure® easy-thread belt path and built-in lock offs



Introducing the Fit4

Fit4 Features

Setting up the Fit4 for Stage 1

Setting up the Fit4 for Stage 2

Setting up the Fit4 for Stage 3

Setting up the Fit4 for Stage 4

Installing for Rear Facing with LATCH System

Installing for Rear Facing with Seatbelt

Installing for Forward Facing with LATCH System

Installing for Forward Facing with Seatbelt

Removing the Fit4 Fabrics

Installing the Fit4 Fabrics


Day One to Year Ten
The Chicco Fit4 4-In-1 Convertible Car Seat, designed to deliver premier child fit and comfort at each unique stage, makes it easy to correctly secure your child from birth through big kid booster. Trusted, easy-to-use installation and safety features unique to Chicco combine with an innovative 4-Stage FitKit System, for ultimate convenience and peace of mind as your baby grows to age ten.

One Car Seat – 4 Stages to Grow
The 4-Stage FitKit System provides optimal fit and comfort through multi-staged construction and easy-to-remove layers, providing more room to grow through each unique stage. Combined with a 10-position easy-adjust headrest and 9 recline positions, your child will be riding in comfort as they grow, correctly secured in each stage:

Chicco Fit4 Stage 1
Chicco Fit4 Stage 2
Chicco Fit4 Stage 3
Chicco Fit4 Stage 4

Easiest All-in-One to Install Correctly
Chicco-exclusive installation features including ReclineSure® leveling system, RideRight® bubble levels, force-multiplying SuperCinch® LATCH tightener and LockSure® belt-tightening system combine to make Fit4 the easiest all-in-one car seat to install correctly. Slim design and space-saving CupFolders make Fit4 easy to fit and secure inside your vehicle.

Protection at Every Stage
DuoGuard® side-impact protection offers two layers of protection with a steel-reinforced frame and EPS energy-absorbing foam that surround the head and torso throughout every stage. A 10-position headrest adjusts in height simultaneously with the 5-point harness to accommodate maximum growth, for best in class protection from birth through booster.
As your child grows, scan the QR Code on the side of the car seat or visit for quick and easy stage transition instructions – online help from Chicco always there to help guide you every step of the way.

  • The best FIT from day 1 to year 10 – for peace of mind and convenience from birth to booster
  • 4-stage FitKit System includes infant positioner, toddler pad, FitKit core and deluxe shoulder pad
  • 9-position ReclineSure® leveling system
  • Best in class 10-position headrest
  • SuperCinch® LATCH tightener
  • DuoGuard® head and torso side-impact protection
  • Steel-reinforced frame
  • RideRight® bubble levels
  • LockSure® steel-reinforced seat belt locking system
  • Slim design and space-saving CupFolders with push-button removal
  • Machine washable fabrics
  • Easy access QR code and transition guide

The Fit4 is designed for children between 4-100 lbs. and up to 57" tall.

Care and Maintenance
Machine wash in cold water using mild detergent. Hang to dry. For complete care and maintenance instructions, refer to the product’s instruction manual.

Stratosphere Fashion


Featuring comfortable, inviting knits, Stratosphere is punctuated with refreshing neutrals and dreamy detailing. Dark grey jersey knit covers the main seatpad, while the Toddler Pad features a sporty, automotive-inspired light grey perforated knit to keep your little one comfortable on all your adventures.


Assembled Dimensions (L x W x H): 21.5" x 19" x 26.5"

Assembled Product Weight: 25 lbs.

Ship Weight: 29.5 lbs.

Carton Dimensions (L x W x H): 27.5" x 22.5" x 19.75"

Harness Mode - Rear-Facing 4-40 lbs
Harness Mode - Forward-Facing 25-65 lbs
Booster Mode - High Back 40-100 lbs
Booster Mode - Backless -
LATCH SuperCinch®
Seat Belt Installation LockSure
Recline Positions 9
Product Weight 25 lbs
Product Total Width 19"
Total Harness Slot Height 18.5"
Total Belt-Positioning Clip Height 21"
Product Interior Width (Shoulder) 13"
Product Interior Width (Hips) 12"
Product Interior Seat Depth 14.5"
Product Max Seated Height 27"
Assembled Product Max Seat Back Height 33.5"
Product Depth (Footprint) 21.5"
Height Adjust Positions 10
Crotch Positions 2
RF Child Max Height Capacity 43"
FF Child Max Height Capacity 54"
Booster Child Height Capacity 38-57"
Product Manuals

Fit4 4-in-1 Convertible Car Seat - Stratosphere is rated 5.0 out of 5 by 31.
Rated 5 out of 5 by from Great car seat for a growing family The car seat has been great to use for my newborn. We like the easy install by using both the latches and vehicle seat belt. It also provides space in our vehicle to allow additional car seats to be installed. The Fitkit system works great when transitioning my child to the next stage of the seat. I recommend this car seat to new parents and to growing families.
Date published: 2020-01-23
Rated 5 out of 5 by from Easy to use: the way it should be! Frequently, I find that many convertible car seats require either wrestling the straps into proper placement, or a battle of wits to coerce the seat into the correct position or adjustment for my child. Not so with this one! First, the 4 layers are easily labeled and descriptive which takes the guesswork out of knowing which is the appropriate configuration for my child’s size and weight. Posted directly on the seat, not just in the user guide, so it’s very convenient! I haven’t needed to adjust the recline setting, but once again it’s clearly labeled which lever to operate and where the seat should be positioned. My favorite part is how easy the 5 point harness is to adjust. The belts don’t seem to bind or twist easily and getting a snug fit doesn’t require excessive strength. Figuring out how to push the release didn’t seem natural at first, but I’m getting used to it. I have also learned to locate the crotch strap before my toddler sits down because it does seem to disappear somehow after they sit down. We also chose to remove the padding around the strap and buckle because it seemed to slide over the buckle and interfere. With it removed, it makes that process simple and I haven’t heard any complaints from my son about the strap being uncomfortable without it. Overall, just a very practical seat that makes the complicated stuff more simple and easy to work with. I did receive this product from Chicco for evaluation and I’ve given my honest opinion regarding its qualities and features.
Date published: 2020-01-14
Rated 5 out of 5 by from GREAT car seat Got this car seat 2-3 weeks ago and my son LOVES it!! before he would scream the entire time we were in the car and now he loves being able to sit up rather than laying back.
Date published: 2020-01-07
Rated 5 out of 5 by from Saved the holidays! My husband and I got our new Fit4 installed and ready to go just in time for the holidays! We had a lot of driving planned between our two families and there was no way our 8 month old would be a happy camper stuck in his infant car seat. The Fit4 exceeded our expectations in every way. It was easy to install and customize to his current size. Our little guy was the happiest he has ever been during a car ride. He is not the typical nap in the car baby, but took a two hour nap in his Fit4. The Fit4 will take us through these next few years with comfort and ease! Chicco provided this product to me in exchange for my honest opinion
Date published: 2020-01-07
Rated 5 out of 5 by from Wish this had existed 2 years ago! I've long said, "man I wish they made a car seat that went from infant to booster" -- And Chicco did! Our large-sized 2 year-old, however, is stoked for his new seat and cupholders, and we're relieved we don't have to buy another car seat! It was unbelievably easy to install -- thanks to the QR codes on the side you don't even have to worry about misplacing the manual (though there's a place for that too), or fumbling around on the internet to get what you need. Adjustments are easy, and the seat feels incredibly secure (no movement at all!). Cupholders are another plus! Chicco provided this product to me in exchange for my honest opinion.
Date published: 2020-01-03
Rated 5 out of 5 by from Very well designed We received the Chicco Fit4 just before Christmas. Timing was great as we had a winter vacation trip planned to Vermont. First impressions was that the seat was very well designed for each stage of your child's growth. We're still finding neat little design elements with it. I highly recommend watching their product videos to quickly see all the features as I just learned of one more writing this review. This was by far the easiest car seat to install or remove. Now I don't complain if I have to remove it because it's so easy to do. Other brands we've had in the past I never wanted to touch the car seat once it was buckled down. As far as comfort, my 2 y/o has been enjoying it and sleeping well in it. The dual cupholders makes it convenient for her to grab her water bottle or store her toys. We were provided this chair in exchange for my honest opinion
Date published: 2020-01-03
Rated 5 out of 5 by from Versatile First receiving the Fit4 4 in 1 convertible car seat I was surprised at how heavy it was. The instructions were easy to follow and installing it into our midsize car was easy using the latches. Our 7 month old who weighs 17 pounds fits perfectly in the stage 2 appearing secure and safe. I am anxious to see how this car seat grows with her. Chicco provided this product to me in exchange for my honest opinion.
Date published: 2019-12-31
Rated 5 out of 5 by from A Great Seat This was my first carseat from Chicco. I must say that Chicco thinks of everything. There is a place to store the latch hooks when they are not in use. There is a place to store the user guide under the seat. There is a place to store the tether in the back. There is a lap shoulder belt lock off when using the lap shoulder belt. The padding is able to be easily removed when routing the seat belt through the seat belt path.The head rest adjusts easily and having the 9 recline positions is another great feature. I am definitely impressed with all that the car seat has to offer. I am using the Chicco Fit 4 4 -in-1 for my son. He just turned 4 years old and weighs 40lbs so I am using the seat in stage 3. I was able to quickly remove each of the pads for stage 1 and 2. I moved the crotch buckle to the forward position and installed the car seat using the lap shoulder belt. I was able to get a tight fit immediately. My son loves his new seat and is very comfortable. Chicco provided this product to me in exchange for my honest opinion.
Date published: 2019-12-30
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Is this car seat made in china?

Asked by: Tama
Chicco products are manufactured either in Italy or China. The Fit4 4-in-1 Convertible car seat is manufactured in China. We hope you find this information helpful.
Answered by: Chicco Expert
Date published: 2020-03-18

Does this car seat have the mesh for air flow ? We have the regular nextfit zip and my daughter gets so hot so looking for something to keep her cooler.

Asked by: punkyblue68
The Fit4 Convertible car seat fabric does not have the 3D air mesh feature.
Answered by: Chicco Expert
Date published: 2020-02-28

Can you safely rear-face this carseat in stage 3 for pre schoolers?

Asked by: beek2013
Please call customer service at 1-877-424-4226 for assistance. We are available Monday - Friday 8am -5pm Eastern time. One of our customer service representatives will be happy to assist you.
Answered by: Chicco Expert
Date published: 2020-02-14

When will be the Altitude released?

Asked by: kittykaaaat
The Fit4 4-in-1 Convertible Car Seat in the Stratosphere fashion is currently in stock. The other fashion colors will be released mid to late January. We recommend continuing to check the website for the fashion colors that are available.
Answered by: Chicco Expert
Date published: 2020-01-13

Do you sell the base separately?

Asked by: Kelbels9
The base is attached to the Fit4 car seat and is not removable.
Answered by: Chicco Expert
Date published: 2020-01-03

In the infant stage, can I click this into a stroller? I currently have the Keyfit that clicks into my Baby Jogger stroller. Would this work the same or is there an attachment I can buy for it to click into?

Asked by: Kelbels9
The Fit4 car seat is not compatible with any Chicco stroller. Chicco does not endorse or warrant using your Chicco car seat in any stroller manufactured by other companies.
Answered by: Chicco Expert
Date published: 2020-01-03

When will it be released?

Asked by: Kervin
Please call our customer service department at 1-877-424-4226 . We are available Monday through Friday from 8am – 5pm, Eastern Standard Time. One of our customer service representatives will be happy to assist you .
Answered by: Chicco Expert
Date published: 2019-12-28
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