Cybex Eternis S vs Graco Extend2Fit 3-in-1

The Extend2Fit 3-in-1 is 0.8 in narrower. The Extend2Fit 3-in-1 lists for $29.96 less.

Only the differences are shown.

Cybex Eternis SGraco Extend2Fit 3-in-1
TypeAll-in-oneAll-in-one
List price$299.95$269.99Lowest price
Rear-facing weight4–50 lb4–50 lb
Rear-facing height17–48 inUp to 49 in
Forward-facing weight22–65 lb26.5–65 lb
Forward-facing height28–49 inUp to 49 in
Booster weight40–120 lb40–100 lb
Booster height44–57 in43–57 in
Seat weight26 lb20.61 lbLightest
Width19.8 in19 inNarrowest
Head ruleCHILD'S HEAD MUST BE 2.5 CM (1 IN) OR MORE BELOW THE TOP OF THE HEADREST OR SHELL, WHICHEVER IS TALLER.Top of head must be 1" (2.5 cm) below the headrest adjustment lever. Forward-facing: Top of child's ears below top of headrest.
Newborn insertNewborn Insert (REAR-FACING ONLY); no weight limit statedThe infant head and body support can only be used for infants 20 lb (9 kg) or less; rear-facing only; body support must be used if shoulders are below the lowest harness setting.
InstallationLATCH, seat beltLATCH, seat belt
Load legNoNo
Anti-rebound barYesNo
RotatesNoNo
Harness heights1210
Recline positions66
Aircraft labelCertified for aircraft, per the makerCertified for aircraft, per the maker
Expires after10 years10 years

Cybex Eternis S

A non-rotating Cybex all-in-one with a 12-position headrest that goes from rear-facing through high-back booster.

  • Rear-facing to 50 lb
  • Approved for aircraft use per Cybex
  • In-seat recline plus 6 base recline positions
  • 19.8 in wide
  • 26 lb to carry

Graco Extend2Fit 3-in-1

A three-mode all-in-one with a leg-room extension panel that supports rear-facing to 50 lb.

  • 50 lb rear-facing limit
  • Extension panel adds up to 5 in of rear-facing leg room
  • Mid-range price
  • No booster-only backless mode
  • Wider at 19 in
Ask the meadow

Eternis S or Extend2Fit 3-in-1?

Answers come from each maker's published specs. Safety and health questions link to the agency or medical source.

Which one will my child use longer, the Eternis S or the Extend2Fit 3-in-1?

The Cybex Eternis S: it goes rear-facing, then forward-facing with a harness, then booster, up to 120 lb. The Extend2Fit 3-in-1 goes rear-facing, then forward-facing with a harness, then booster, up to 100 lb. The Eternis S expires after 10 years.

Which is easier to travel with?

Eternis S: certified for planes, 26 lb. Extend2Fit 3-in-1: certified for planes, 20.6 lb.

What does the extra $29.96 for the Eternis S get you?

Per the makers, the Eternis S adds an anti-rebound bar. Both meet the same federal crash standard.

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