Chicco MyFit Harness Booster Car Seat - Fathom fashion


Item No. 04079783780070

MyFit Harness + Booster Car Seat - Fathom

Sale Price$199.99


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Additional Information


Harness Mode

Harness Mode

Padded, no-rethread harness accommodates growing toddlers from 25-65 lbs

Booster Mode

Booster Mode

Converts to belt-positioning booster for big kids from 40 to 100 lbs

9-Position Headrest

9-Position Headrest

Easy-adjust headrest offers extendable comfort throughout both modes

4-Position Recline

4-Position Recline

Wide range of adjustment offers improved child comfort and a better vehicle fit

Bubble Level-Indicators

Bubble Level-Indicators

Two bubble levels clearly indicate seat angle in vehicle during installation

LockSure Belt System

LockSure Belt System

Easy routing and lock-offs simplify installation with the vehicle seatbelt



Introducing the MyFit

MyFit Features

Transitioning to booster mode

Installing with LATCH

Installing with the seatbelt

Removing and replacing the fabrics


2-in-1 Comfort & Security
The Chicco MyFit harness/belt-positioning car seat is designed to grow with children from toddler through big kid with easy transition from five-point harness to vehicle seat belt. Nine headrest positions accommodate growth throughout both modes and work together with a four-position recline to support proper posture. An extra-deep ErgoBoost® seat with dual-density foam padding is sloped and contoured for superior comfort.

Reassuring Protection
DuoGuard side-impact protection offers two layers of protection for two zones with a rigid shell and EPS energy-absorbing foam that surround the head and torso. The seat shell is also reinforced with a steel frame for superior impact protection.

Easiest to Install
From the makers of the #1-rated KeyFit® and NextFit®, the MyFit is designed with smart functionality that makes it the easiest to install simply, accurately, and securely, every time. A four-position ReclineSure® leveling system and RideRight® bubble levels help achieve and verify proper angle in the vehicle seat. Premium LATCH connectors and a LockSure belt-tightening system with wide routing make it easy to achieve a tight and secure fit with LATCH or the vehicle seat belt.

User-Friendly Touchpoints
A padded, no-rethread harness with a one-pull tightener provides reassuring security for growing toddlers. The harness easily hides away to create a belt-positioning booster with shoulder and lap belt guides for big kids four years and up. Two dishwasher-safe CupFolders feature easy push-button removal and fold out of the way to save space when empty.

  • Converts from 5-point harness to belt-positioning booster
  • DuoGuard side-impact protection for head and torso
  • Steel-reinforced frame
  • Deep ErgoBoost® seat with dual-density padding and sloped, contoured design
  • 9-position headrest accommodates growth throughout both modes
  • 4-position recline helps improve child comfort and vehicle fit
  • RideRight® bubble levels make it easy to verify angle in vehicle seat
  • Premium connectors for installation with LATCH
  • LockSure lock-offs and wide belt routing for installation with seat belt
  • 2 dishwasher-safe CupFolders with push-button removal

Usage in harness mode
For children at least 2 years old who weigh between 25 and 65 pounds, and height is 54 inches tall or less

Usage in booster mode
For children at least 4 years old who weigh between 40 and 100 pounds, and height is 38 to 57 inches

Care and Maintenance
Hand wash fabrics using mild soap and water, or machine washed in cold water on delicate cycle using mild detergent; hang to dry. For plastics, sponge clean using warm water and mild soap; towel dry. Do not use bleach on any part of this product. To clean harness, sponge clean using warm water and mild soap; air dry. Do not machine wash harness.

Fathom Fashion


The Fathom fashion delivers chic comfort in deepening inky grey and midnight blue hues creating understated style for your every-day adventures.


Assembled Product Dimensions: 21" x 27" x 18"

Assembled Product Weight: 25 lbs

Ship Weight: 28.75 lbs

Carton Dimensions: 28" x 21.5" x 18.75"

Harness Mode 25-65 lbs
Booster Mode 40-100 lbs
LATCH Premium
Recline Postions 4 true reclines
Product Weight 25 lbs
Product Total Width 17.5 in
Total Harness Slot Height 20 in
Total Belt-Positioning Clip Height 21 in
Product Interior Width (Shoulder) 12 in
Product Interior Width (Hips) 11.5 in
Product Interior Seat Depth 17.5 in
Product Max Seated Height 29.5 in
Product Depth (Footprint) 20 in
Height Adjust Positions 9
Crotch Positions 2
Product Manuals

MyFit Harness + Booster Car Seat - Fathom is rated 4.8 out of 5 by 35.
Rated 5 out of 5 by from We love this carseat when she a sleep her head does not flop over like the other seat we used it the best we own I wood buy a other one if we had to
Date published: 2018-10-06
Rated 5 out of 5 by from Comfortable We have one already in one car and my grandson calls it his race car seat. He is happy and comfortable.
Date published: 2018-08-25
Rated 5 out of 5 by from Perfect seat!! After a few month of debate I finally decided on Chicco when it was getting time to turn my son around to face forward. I needed several things from a seat and this met and exceeded them all! He had a Nuna Rava convertible since birth and the reason I didn’t keep it was because we bought a new car with a bench in the second row. I wanted all 3 to sit in the second row instead of shuffling one to the 3rd row for easy on and off for school and since my son would be in the middle his Nuna was 1) too wide and 2) really high up making it difficult for me to get him in and out. The width of the chicco is AWESOME! So slim, yet provides lots of growing room. The low profile allows easy entry and removal for me to get him in and out. And the padding is AMAZING. I’m always sooo disappointed in the lack of padding in kids seats. This absolutely delivers in every aspect! The head adjustment is a breeze and I can adjust it without removing the seat. The recline is awesome especially having a car sleeper. I love the padding around the chest clip area he’s so snug and secure. And the strap adjustment is amazing too. It’s so smooth and easy which makes getting in and out so much faster and easier. Actually I was so impressed sndcin love With the seat I considered buying one for my daughter who is in a booster. So for fun I tried to turn it into a booster just to see and again was betond impressed how unbelievably easy it was for me to turn it into a booster without having to take it in a million pieces, remove straps etc. the design they have is genius! This is a complete win!!!
Date published: 2018-08-22
Rated 3 out of 5 by from Does the job It wasn't all that I expected... Does the job but I'm not overly impressed
Date published: 2018-08-17
Rated 5 out of 5 by from Great Car Seat The MyFit Harness + Booster Car Seat is a great product!T The Car seat is not heavy which is important for installing. The fabric is durable, smooth and easy to clean which is important with children who often have accidents and spills. Installation was seamless, the bubble leveling system makes it easy to adjust matching the seat position in your car! The straps are easy to latch after placing your child in the seat and easy to loosen when removing your child! I have to say that almost almost all of my products are Chicco and I love them, the quality of these products are excellent! The MyFit Harness + Booster seat is a great addition! Chicco provided this product to me in exchange for my honest review.
Date published: 2018-07-29
Rated 5 out of 5 by from Amazing carseat We just transitioned my son from his convertible car seat to the MyFit so his sister could have his. I went back and forth between this and the similar Britax model. I am sooo glad I choose the MyFit. Not only does my 3 year old love it, I do too. I love that it has for recline positions, the padding around the chest clip isn’t rubbery, but more padded and it is comfortable for my son. I have been telling the daycare he goes to if people ask for a recommendation, this is the seat to tell them about! Also, installation was so easy. Took me a matter of minutes to install via latch system. Great product!
Date published: 2018-06-16
Rated 5 out of 5 by from Such a great Seat I did lots of research and even bought a couple seats that I had to return before I found this one. I am very happy with it. It was simple to install. I love that is can recline slightly.The best parts for me are that it does not push my sons head forward like some of the others did. Also it is very easy to tighten the straps. I do not have to pull super hard to get them tight and secure. My son loves his "big boy" seat. The cup holders are removable in case you need to squeeze someone beside the seat. The crotch strap is easy to change the position. I feel good about traveling with my son in this seat but he doesn't feel like he is in a car seat and has more room.
Date published: 2018-04-12
Rated 5 out of 5 by from Perfect fit Installation was very simple and the seat is not as heavy as our previous car seat. I like the two cup holders as my daughter always has a cup and then other random things and she now can place things in both holders. It’s a lot more comfortable for my 4 year old and safety is key for us so it was a perfect fit. I like the darker color as we are always on the go so any marks made won’t show... we love Chico products and are very pleased with this chair that she will grow with.
Date published: 2018-04-09
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