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CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
Price on Amazon.com as of 2026-11-02 13:25 UTC, and subject to change.
An all-in-one car seat with 3 modes: rear-facing harness 4 to 50 lb; forward-facing harness 26.5 to 65 lb, up to 49 in; high-back booster 40 to 100 lb, 43 to 57 in.
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CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
The Graco Extend2Fit 3-in-1 rear-faces from 4 to 50 lb, with the head at least 1 in below the headrest adjustment handle, forward-faces with the harness from 26.5 to 65 lb and up to 49 in, and becomes a high-back booster for 40 to 100 lb, 43 to 57 in, at least 4 years old. It expires 10 years after the date of manufacture.
It suits a family that wants long rear-facing use and a booster stage from one seat. The trade-off is size: Graco lists it at 19 in wide and 20.61 lb. The version with an anti-rebound bar has the same mode limits, adds the bar for rear-facing use, and Graco lists it at 21.9 lb and 26.75 in deep.
A research summary of Graco’s published specifications and manual, read . Not a hands-on test or a crash-safety rating.
This seat covers 3 stages, and a child has to meet every limit of the stage they are in. Graco gives it a 10-year life from the date of manufacture, so check the date label before using a hand-me-down.
| Mode | Child weight | Child height | Minimum age | Conditions |
|---|---|---|---|---|
| Rear-facing harness | 4 to 50 lb | Not published | Not published | Head must be at least 1 in below the headrest adjustment handle |
| Forward-facing harness | 26.5 to 65 lb | Up to 49 in | Not published | — |
| High-back booster | 40 to 100 lb | 43 to 57 in | 4 years | At least 4 years old |
A child must meet every limit for the mode they use. The labels on your seat and its manual are the final word.
Every install is a fit between one seat and one vehicle. Read both manuals, and use a free inspection station if anything is unclear.
At 19 in at its widest, measure your back seat before counting on three across. It weighs 20.61 lb, which matters if you will move it between cars or carry it through an airport.
Talia, Ashten, Cullen.
Rear-facing, the seat uses one of 4 rear-facing recline positions, set with the handle on the front or back. On level ground, the bubble must be completely under the blue lines; rolled towels at the vehicle seat crease may help. The extension panel pulls out to 4 positions for legroom. Route the lower anchor attachment or vehicle belt through the blue-labelled belt path. Do not use the lower anchors for a child over 40 lb. Infants under 26.5 lb must ride rear-facing, and the head must stay at least 1 in below the headrest adjustment handle.
Forward-facing, place the seat in recline position 4, 5 or 6, and use position 6 for a child over 40 lb. Do not use the extension panel forward-facing. The lower anchors are not for a child over 45 lb, so heavier children need the vehicle belt through the orange-labelled forward-facing path, with the tether. The manual's chart says children 26.5 to 50 lb should ride rear-facing, though they can ride forward-facing once they can sit upright unassisted. Children must be 49 in or less in harness mode.
Booster mode is for children 40 to 100 lb, 43 to 57 in tall and at least 4 years old, with the vehicle lap and shoulder belt. Use recline position 6. The lap belt goes low on the hips in front of the armrest, and the shoulder belt lies between the neck and the edge of the shoulder. Never use a lap-only belt, and do not use the extension panel. The front of the booster must not hang over the front of the vehicle seat. LATCH may hold the seat in place up to 100 lb if the vehicle manufacturer allows it, but the belt still restrains the child.
Each campaign naming this family was read against this model’s numbers and build dates, and none covers it. Still check your seat’s model number and date of manufacture before use, especially on a used seat.
Rear-facing harness is 4 to 50 lb, forward-facing harness is 26.5 to 65 lb and up to 49 in, and high-back booster is 40 to 100 lb, 43 to 57 in and at least 4 years old.
Graco Extend2Fit 3-in-1 Car Seat product page (opens in a new tab)
The manual says not to install with the lower anchors for a child over 40 lb rear-facing or over 45 lb forward-facing. In booster mode, LATCH may hold the seat up to 100 lb if the vehicle manufacturer allows it.
Graco Extend2Fit 3-in-1 Car Seat manual (PDF) (opens in a new tab)
It is certified for aircraft use with the harness, on forward-facing aircraft seats, without the top tether forward-facing. It is not certified for aircraft as a booster because aircraft have no shoulder belts.
Graco Extend2Fit 3-in-1 Car Seat manual (PDF) (opens in a new tab)
Graco says it increased the high-back booster weight minimum from 30 to 40 lb to continue to meet industry standards. Check the label on the seat you have.
Graco Extend2Fit 3-in-1 Car Seat product page (opens in a new tab)
Graco lists it at 19 in wide, 24.5 in high and 20.75 in deep, with a product weight of 20.61 lb.
Graco Extend2Fit 3-in-1 Car Seat product page (opens in a new tab)
Graco says to machine wash the seat pad in cold water with gentle soap on a delicate cycle and drip-dry, without bleach. The harness is surface wash only, and the buckle is cleaned in a cup of warm water without soap.
Graco Extend2Fit 3-in-1 Car Seat product page (opens in a new tab)
Answers refer to the model and manual version on this page. Check the instructions supplied with your seat.
| Model | Top child weight | Seat weight | Width | Usable life |
|---|---|---|---|---|
| Extend2Fit 3-in-1 Car Seat (this seat) | 100 lb | 20.61 lb | 19 in | 10 years |
| Extend2Fit Convertible Car Seat | 65 lb | 19 lb | 19.5 in | 10 years |
| Contender Slim Convertible Car Seat | 65 lb | 16 lb | 18.9 in | 7 years |
| Extend2Fit 3-in-1 Car Seat featuring Anti-Rebound Bar | 100 lb | 21.9 lb | 19 in | 10 years |
| 4Ever DLX 4-in-1 Car Seat | 120 lb | 23 lb | 21.5 in | 10 years |
| 4Ever DLX Slim 4-in-1 Car Seat | 120 lb | 27.5 lb | 18.9 in | 10 years |
| 4Ever DLX Grad 5-in-1 Slim Car Seat | 120 lb | 24.1 lb | 18 in | 10 years |
| 4Ever 4-in-1 Convertible Car Seat featuring TrueShield Technology | 120 lb | 24 lb | 21.5 in | 10 years |
| 4Ever Extend2Fit 4-in-1 Car Seat | 120 lb | 25.99 lb | 21.5 in | 10 years |
| Grows4Me 4-in-1 Car Seat | 110 lb | 22.5 lb | 21.5 in | 10 years |
| SlimFit3 LX 3-in-1 Car Seat | 100 lb | 19.2 lb | 16.7 in | 10 years |
| SlimFit 3-in-1 Car Seat | 100 lb | 19.47 lb | 19.9 in | 10 years |
| SlimFit LX 3-in-1 Car Seat | 100 lb | 21.5 lb | 19.9 in | 10 years |
| TriRide 3-in-1 Car Seat | 100 lb | 18.45 lb | 19 in | 10 years |
| TrioGrow SnugLock 3-in-1 Car Seat | 100 lb | 18.92 lb | 19 in | 10 years |
Other all-in-one seats whose published weight and height limits overlap the Extend2Fit 3-in-1 Car Seat.
| Mode | Weight | Height |
|---|---|---|
| Rear-facing harness | 4–50 lb | Not published |
| Forward-facing harness | 26.5–65 lb | Up to 49 in |
| High-back boosterfrom 4 years | 40–100 lb | 43–57 in |
$339.99Price on gracobaby.com as of 2026-10-07 05:47 UTC, subject to change
| Mode | Weight | Height |
|---|---|---|
| Rear-facing harness | 4–40 lb | Not published |
| Forward-facing harness | 22–65 lb | Up to 49 in |
| High-back boosterfrom 4 years | 40–100 lb | 43–57 in |
| Backless boosterfrom 4 years | 40–120 lb | 43–57 in |
| Mode | Weight | Height |
|---|---|---|
| Rear-facing harness | 4–40 lb | Not published |
| Forward-facing harness | 26.5–65 lb | Up to 49 in |
| High-back boosterfrom 4 years | 40–100 lb | 43–57 in |
| Backless boosterfrom 4 years | 40–120 lb | 43–57 in |
$319.99Maddox 2.0 · Amazon price as of 2026-11-02 13:25 UTC, subject to change
| Mode | Weight | Height |
|---|---|---|
| Rear-facing harness | 4–40 lb | Not published |
| Forward-facing harness | 26.5–65 lb | Up to 49 in |
| High-back boosterfrom 4 years | 40–100 lb | 43–57 in |
| Backless boosterfrom 4 years | 40–120 lb | 43–57 in |
| Seat belt trainerfrom 5 years | 50–120 lb | 43–60 in |
