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Evenflo Chase LX

The Evenflo Chase LX forward-faces up to 40 lb, is 21.9 in wide, and weighs 9.1 lb, per Evenflo. Evenflo harness-to-booster seat with a forward-facing harness mode and a high-back booster mode. Evenflo lists SKU CS500111870 (Jameson Gray), an official name of Chase LX 2-in-1 Booster Car Seat, and a 9.14 lb seat weight.

  • $79.99List price
  • 40 lbHarness to
  • 100 lbBooster to
  • 9.14 lbSeat weight
See it on Evenflo's site

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Chase LX: key facts

  • The Evenflo Chase LX forward-faces with a harness from 30 to 40 lb and 35 to 43.3 in tall; works as a booster from 40 to 100 lb and 43.3 to 57 in tall, per Evenflo.
  • Outgrown by height: "Tops of the child's ears are at or below the top of the child restraint headrest"
  • It installs with LATCH forward-facing + top tether, seat belt forward-facing + top tether or booster: vehicle lap/shoulder belt (lower anchor connectors and tether may also be used).
  • Evenflo lists it as certified for aircraft ("When used with the 5-point harness system and properly installed pursuant to these instructions, this restraint is certified for use only in passenger and multi-purpose passenger motor vehicles, buses, and trucks equipped with either lap belts only or lap/shoulder belt systems and in aircraft. ... In booster mode, this seat is NOT certified for aircraft use.").
  • It's 21.9 in wide at the widest point and weighs 9.1 lb.

From Evenflo's manual and published specs. Always follow the limits on your seat's labels.

How the Chase LX stacks up

Against the 22 harness-to-booster car seats we track. The shaded band is where the middle half of them fall; the dot is this one.

Forward-facing limit40 lb21st highest forward-facing limit of 22

Below the 65 lb most harness-to-booster car seats list.

This one
40 lbmiddle 65 lb65 lb
Width21.9 in10th narrowest of 11

Above the typical range for harness-to-booster car seats (18.3 in to 19.4 in).

This one
17.5 inmiddle 19 in21.9 in
Weight9.1 lbLightest of 15 harness-to-booster car seats

Below the typical range for harness-to-booster car seats (16 lb to 25 lb).

This one
9.1 lbmiddle 23 lb26.2 lb
Price$79.994th lowest price of 18

Within the typical range for harness-to-booster car seats ($79.99 to $239.99).

This one
$54.99middle $139.99$349.99

What sets the Chase LX apart

Measured against the 22 harness-to-booster car seats we compare, from each maker's published specs.

  • Lightestof the 15 harness-to-booster car seats with it published: 9.1 lb
  • Lowest seat weightof the 15 harness-to-booster car seats that list it: 9.14 lb
  • Forward-facing limit: 40 lbbelow the middle half of the 22 harness-to-booster car seats that publish it (65 lb to 65 lb)
  • Width: 21.9 inabove the middle half of the 11 harness-to-booster car seats that publish it (18.3 in to 19.4 in)

Next to its closest matches

Flying with the Chase LX

Evenflo's label: “When used with the 5-point harness system and properly installed pursuant to these instructions, this restraint is certified for use only in passenger and multi-purpose passenger motor vehicles, buses, and trucks equipped with either lap belts only or lap/shoulder belt systems and in aircraft. ... In booster mode, this seat is NOT certified for aircraft use.” It is 21.9 in wide at its widest point.

What airlines say about car seats:

  • American: “Each ticketed customer is allowed 1 stroller and 1 car seat to be checked free of charge” “If an unoccupied, adjoining seat is not available, the gate agent will check the safety seat to your final destination.” Source
  • Alaska: “We will transport your child's car seat and stroller free of charge as checked baggage.” Source
  • JetBlue: “Checking a child safety seat will not count towards your checked baggage allowance and there is no fee assessed” Source
  • Spirit: “One (1) car seat will be accepted per child as checked baggage at no charge.” Source
  • Frontier: “strollers and car seats can be checked for free.” Source
  • Allegiant: “There is no charge for checking or gate checking one car seat per fare-paying passenger.” Source
  • Breeze: “Child seats may be carried on board the aircraft if a seat has been purchased for the Infant or Child” Source

Quoted from each airline's page as of 2026-11-02.

Listed features

  • Harness mode and high-back booster mode in one seat
  • 9.14 lb seat weight per Evenflo
  • Evenflo gives a fit rule for both modes: tops of the child's ears at or below the top of the headrest

Where to buy the Chase LX

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good to know
  • Check for recalls: Search the agency's recall list with the model number and date code from the label: NHTSA recall search.
  • Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Evenflo Chase LX
TypeHarness-to-booster
List price$79.99
Forward-facing weight30–40 lb
Forward-facing height35–43.3 in
Booster weight40–100 lb
Booster height43.3–57 in
Seat weight9.14 lb
Width21.9 in
Head ruleTops of the child's ears are at or below the top of the child restraint headrest
InstallationLATCH forward-facing + top tether, seat belt forward-facing + top tether, booster: vehicle lap/shoulder belt (lower anchor connectors and tether may also be used)
Load legNo
Anti-rebound barNo
RotatesNo
Aircraft labelCertified for aircraft, per the maker

Compare the Chase LX with

How each closest rival differs from the Chase LX, from the makers' specs.

Ask the meadow

Chase LX: questions answered

From Evenflo's published specs, last checked 2026-11-06.

Will the Evenflo Chase LX fit three across or in a small car?

It's wider than 100% of the harness-to-booster seats we track, at 21.9 in. The narrowest is the Chicco MyFit ClearTex Harness + Booster at 17.5 in. Fit depends on your vehicle; check each seat's manual and your vehicle manual. Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Can you bring the Evenflo Chase LX on a plane?

Yes, Evenflo lists it as certified for aircraft; look for the red-lettered label that says so. The FAA asks that a car seat go in a window seat so it doesn't block the aisle, and the crew will look for that label. It weighs 9.1 lb to carry through the airport.

Is it OK to buy a used Chase LX?

NHTSA publishes guidance on used car seats on its car seat page. Check the label and the maker's instructions, and ask your pediatrician about your child.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

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Where these specs come from

Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.