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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 21:51 UTC, and subject to change.
A harness-to-booster seat with 2 modes: forward-facing harness 30 to 40 lb, 35 to 43.3 in; high-back booster 40 to 100 lb, 43.3 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 Chase LX is a forward-facing harnessed booster. The manual sets the 5-point harness at 30 to 40 lb and 35 to 43.3 in for children at least 2 years old, then a high-back booster at 40 to 100 lb and 43.3 to 57 in for children at least 5. Evenflo lists it at 9.14 lb and 21.9 in wide.
It suits a child who has outgrown a rear-facing seat by size and still needs a harness, then a high-back booster later. The trade-off is a short harness stage of 30 to 40 lb, and a child who outgrows it before age 5 must leave the seat. The Chase Plus has the same limits and 21.9 in width and is listed at 9.5 lb, while the Maestro Sport keeps the harness to 50 lb and is listed at 19 in wide.
A research summary of Evenflo’s published specifications and manual, read . Not a hands-on test or a crash-safety rating.
This seat covers 2 stages, and a child has to meet every limit of the stage they are in. Check the date label on the shell before using a hand-me-down; every seat has an expiry.
| Mode | Child weight | Child height | Minimum age | Conditions |
|---|---|---|---|---|
| Forward-facing harness | 30 to 40 lb | 35 to 43.3 in | 2 years | At least 2 years old; ears at or below top of headrest. |
| High-back booster | 40 to 100 lb | 43.3 to 57 in | 5 years | At least 5 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.
At 21.9 in at its widest, measure your back seat before counting on three across. It weighs 9.14 lb, which matters if you will move it between cars or carry it through an airport.
Jameson Gray, Jubilee Green.
When they differ, follow the manual and the labels on your seat.
The seat is forward-facing only and must never be used rear-facing. Install it with the lower anchor connector assembly or the vehicle belt through the belt path, not both, and the manual says to always use the top tether in harness mode. It must not move more than 1 in side to side or front to back at the belt path. A center install with the inner lower anchor bars of the outer seats is allowed if the vehicle manual permits it and the bars are 11 - 20 in apart. The manual also says never to use the seat without its headrest installed.
The harness straps sit at the child's shoulder level or the closest slot slightly above. To move them, press the release button, pull the straps free of the splitter plate and feed them through the new slot in both the pad and the shell. When reattached, the strap loops should look bunched on the splitter plate. The buckle strap moves to the slot closest to the child but never under the bottom. The harness stage ends when the child exceeds 40 lb or 43.3 in, the ears pass the top of the headrest, or the shoulders pass the highest harness level.
To convert, you loosen the harness, pull the straps through to the front, remove the seat pad, route the straps through the adjustment slots and reattach them to the splitter plate. The chest clip and buckle tongues tuck into recesses on either side of the shell. The buckle strap anchor is pushed out through the shell, then fed back in from the bottom so the strap lies flat. In booster mode use only a lap and shoulder belt, never a lap belt alone. The shoulder belt passes under the headrest while the shoulders are at or below that opening; if that pulls the belt down behind the shoulder, it goes over the headrest instead. Keep the booster secured when empty.
Remove the EPS foam from the headrest pad before washing. Machine wash the seat pad separately in cold water on a delicate cycle and tumble dry 10 to 15 minutes on low heat. Wipe the harness with mild soap and water and let it air dry, and never use the seat without its pad. On a plane, the seat is certified only with the 5-point harness. It goes forward-facing on a fully upright aircraft seat, with the aircraft belt through the belt path opening in the back, and must not move more than 1 in.
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.
In the manual, the 5-point harness covers 30 to 40 lb and 35 to 43.3 in for children at least 2. The high-back booster covers 40 to 100 lb and 43.3 to 57 in for children at least 5.
Evenflo Chase Select/LX owner's manual (PDF) (opens in a new tab)
Only in harness mode. The manual says booster mode is not certified for aircraft because a belt-positioning booster needs a lap and shoulder belt.
Evenflo Chase Select/LX owner's manual (PDF) (opens in a new tab)
The manual says a child who exceeds any harness limit and is less than 5 years old must stop using this seat. Booster mode starts at 5 years and 40 lb.
Evenflo Chase Select/LX owner's manual (PDF) (opens in a new tab)
Evenflo lists the Chase Plus with the same 30 - 40 lb harness, a booster to 100 lb, a 21.9 in width and a weight of 9.5 lb, and it names its RightFit belt path. The Chase LX is listed at 9.14 lb.
Evenflo lists it at 18.9 in deep, 21.9 in wide and 29.3 in high, with a product weight of 9.14 lb.
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 |
|---|---|---|---|---|
| Chase LX Harnessed Booster Car Seat (this seat) | 100 lb | 9.14 lb | 21.9 in | — |
| Chase Plus 2-In-1 Booster Car Seat | 100 lb | 9.5 lb | 21.9 in | — |
| Maestro Sport Booster Car Seat | 100 lb | 9.6 lb | 19 in | — |
| GoTime No Back Booster Car Seat | 120 lb | 3 lb | 7.44 in | — |
| GoTime LX Booster Car Seat | 120 lb | 7.1 lb | 19.49 in | — |
Other harness-to-booster seats whose published weight and height limits overlap the Chase LX Harnessed Booster Car Seat.
| Mode | Weight | Height |
|---|---|---|
| Forward-facing harnessfrom 2 years | 30–40 lb | 35–43.3 in |
| High-back boosterfrom 5 years | 40–100 lb | 43.3–57 in |
$64.99Price on evenflo.com as of 2026-10-07 05:46 UTC, subject to change
| Mode | Weight | Height |
|---|---|---|
| Forward-facing harnessfrom 2 years | 30–50 lb | 35–49 in |
| High-back boosterfrom 5 years | 40–100 lb | 44–57 in |
17% off$99.99List price $119.99Whitney Purple · Amazon price as of 2026-11-02 21:51 UTC, subject to change
| Mode | Weight | Height |
|---|---|---|
| Forward-facing harnessfrom 2 years | 30–65 lb | 35–49 in |
| Belt-positioning booster | 40–120 lb | 44–63 in |
$359.99Cool Flow Gray · Amazon price as of 2026-11-02 21:50 UTC, subject to change
| Mode | Weight | Height |
|---|---|---|
| Forward-facing harnessfrom 2 years | 30–65 lb | 35–49 in |
| Belt-positioning booster | 40–120 lb | 44–63 in |
$239.99Mod Black · Amazon price as of 2026-11-02 21:50 UTC, subject to change
