Chicco MyFit vs Joie Bay Latch SI 3-in-1 Harness Booster

The MyFit is 1.5 in narrower.

Only the differences are shown.

Chicco MyFitJoie Bay Latch SI 3-in-1 Harness Booster
TypeHarness-to-boosterHarness-to-booster
List price$239.99$239.99
Forward-facing weight26.5–65 lb30–65 lb
Forward-facing heightUp to 54 in27–49 in
Booster weight40–100 lb40–120 lb
Booster height44–57 in43–60 in
Seat weight25 lb23.7 lbLightest
Width17.5 inNarrowest19 in
Head ruleHarness mode only when 'Harness Straps can be positioned at or above the child's shoulders' (manual Select Harness Mode page); no top-of-head rule found in manualForward-Facing: The harness straps MUST be AT or JUST ABOVE the child's shoulders. For forward-facing harnessed mode, DO NOT use the headrest higher than indicated on the label on the child restraint (headrest position 11 as indicated under the backrest softgoods).
InstallationLATCH forward-facing + top tether (harness, child up to 40 lbs), seat belt forward-facing + top tether (harness), booster: vehicle lap-shoulder belt (LATCH and top tether optional)rigid LATCH, vehicle seat belt
Load legNoNo
Anti-rebound barNoNo
RotatesNoNo
Harness heights9Not listed
Recline positions4Not listed
Aircraft labelCertified for aircraft, per the makerCertified for aircraft, per the maker
Expires after8 years10 years

Chicco MyFit

    Joie Bay Latch SI 3-in-1 Harness Booster

    A forward-facing harness seat with rigid LATCH that converts to high-back and then backless booster, covering children up to 60 in.

    • Rigid LATCH
    • Harness to 65 lb, backless booster to 120 lb
    • Ten-year life
    • No rear-facing mode
    Ask the meadow

    MyFit or Bay Latch SI 3-in-1 Harness Booster?

    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 MyFit or the Bay Latch SI 3-in-1 Harness Booster?

    The Joie Bay Latch SI 3-in-1 Harness Booster: it goes forward-facing with a harness, then booster, up to 120 lb. The MyFit goes forward-facing with a harness, then booster, up to 100 lb. The Bay Latch SI 3-in-1 Harness Booster expires after 10 years.

    Which is easier to travel with?

    MyFit: certified for planes, 25 lb. Bay Latch SI 3-in-1 Harness Booster: certified for planes, 23.7 lb.

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