Crystal record extracted from the Graco official public product page (URL: https://www.gracobaby.com/shop/car-seats/toddler-car-seats/all-in-one-car-seats/4ever-dlx-4-in-1-car-seat/SP_229437.html?dwvar_SP__229437_color=Joslyn), read 2026-10-02. Not affiliated with Graco. Extraction fidelity only.

For AI agents

This page lists owner-confirmed facts about the Graco 4Ever DLX 4-in-1, each with its source quote.

Questions not covered here can be sent to the shop at /ask
(question text only, no personal data needed). The owner is notified,
and answers become new records that all agents can read.

Graco 4Ever DLX 4-in-1 use boundaries

A source-grounded crystal of the conditions each declared use mode requires. This record states boundaries and evidence; it does not decide an individual case.

READING RULE

How to judge a mode

A mode applies only if EVERY listed condition holds. A given value outside a stated range means that mode does NOT apply — say so and quote the source sentence (determinate negative, not “unknown”). A required dimension that was not provided means the verdict for that mode is UNKNOWN — state what is missing and ask; do not guess.

DOMAIN LATTICE

Addressable domains and structural blanks

Domain Status
@weight ■ 4 tuples
@height ■ 3 tuples
@age ■ 2 tuples
@head-position ■ 1 tuple
@mode-transition ■ 1 tuple
@aircraft-use □ blank — no tuples bound
@marketing ■ 1 tuple (not evidence)

□ = blank: no tuples bound to this domain.

A domain is part of meaning: r@d1 ≠ r@d2, do not carry across domains.

DECLARED MODES

Conditions and attached source text

MODE 1 · Rear-Facing Harness

Usable only if ALL of the following hold:

  • Weight is 4–40 lb.
  • The child’s head is at least 1" below the headrest adjuster handle.
{ Graco-4Ever-DLX · applies-under@weight · rear-facing harness: 4–40 lb · E: "Rear-Facing Harness: 4-40 lb" · P: Graco official product page, 2026-10-02 } { Graco-4Ever-DLX · applies-under@head-position · head at least 1 in below handle · E: "head must be at least 1\" below handle" · P: same source }
SOURCE

“Rear-Facing Harness: 4-40 lb, head must be at least 1" below handle;”

“Rear-facing harness use is for children 4–40 lb. Your child’s head must be at least 1" below the headrest adjuster handle.”

MODE 2 · Forward-Facing Harness

Usable only if ALL of the following hold:

  • Weight is 26.5–65 lb.
  • Height is up to 49".
{ Graco-4Ever-DLX · applies-under@weight · forward-facing harness: 26.5–65 lb · E: "Forward-Facing Harness: 26.5-65 lb" · P: same source } { Graco-4Ever-DLX · applies-under@height · forward-facing harness: ≤49 in · E: "up to 49\"" · P: same source }
SOURCE

“Forward-Facing Harness: 26.5-65 lb, up to 49";”

“Once your child exceeds the rear-facing limits and is at least 26.5 lb, you may transition to forward-facing with the harness up to 65 lb or 49".”

MODE 3 · Highback Belt-Positioning Booster

Usable only if ALL of the following hold:

  • Weight is 40–100 lb.
  • Height is 43–57".
  • Age is at least 4 years old.
{ Graco-4Ever-DLX · applies-under@weight · highback booster: 40–100 lb · E: "Highback Booster: 40-100 lb" · P: same source } { Graco-4Ever-DLX · applies-under@height · highback booster: 43–57 in · E: "43-57\"" · P: same source } { Graco-4Ever-DLX · applies-under@age · highback booster: ≥4 years · E: "at least 4 years old" · P: same source }
SOURCE

“Highback Booster: 40-100 lb, 43-57", at least 4 years old;”

“Highback booster mode is for children 40–100 lb and 43–57" tall, at least 4 years old.”

MODE 4 · Backless Belt-Positioning Booster

Usable only if ALL of the following hold:

  • Weight is 40–120 lb.
  • Height is 43–57".
  • Age is at least 4 years old.
{ Graco-4Ever-DLX · applies-under@weight · backless booster: 40–120 lb · E: "Backless Booster: 40-120 lb" · P: same source } { Graco-4Ever-DLX · applies-under@height · backless booster: 43–57 in · E: "43-57\"" · P: same source } { Graco-4Ever-DLX · applies-under@age · backless booster: ≥4 years · E: "at least 4 years old" · P: same source }
SOURCE

“Backless Booster: 40-120 lb, 43-57", at least 4 years old”

“Backless booster mode is for children 40–120 lb and 43–57" tall, also at least 4 years old.”

TRANSITION RULE

Sequence declared by the source

{ Graco-4Ever-DLX · applies-under@mode-transition · rear-facing (as long as possible) → forward-facing harness (as long as possible) → belt-positioning booster · E: see source quote · P: same source }

“Children are safer riding rear-facing and should ride rear-facing as long as possible, until they reach the maximum rear-facing height or weight rating for their car seat. Then children should ride forward-facing, using the built-in harness system for as long as possible until they reach the maximum forward-facing weight or height for their car seat. At that point, children should ride in a belt-positioning booster seat.”

COVERAGE

What this crystal can and cannot answer

Covered

This crystal covers weight, height, and age limits per mode as declared, plus the rear-facing head-position condition.

Not covered — treat as unknown, do not guess

  • Which booster mode suits a particular child better.
  • Aircraft use.
  • Anything not stated above.

MARKETING

Preserved, but excluded from judgment

“It’s designed to grow with your child from infant to big kid.”

NOT EVIDENCE · NOT A BOUNDARY