
Joie Latch SI 3-in-1 Harness Booster Car Seat
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Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Joie Latch SI is a forward-facing seat that works three ways: a 5-point harness seat, a high-back belt-positioning booster, and a backless booster. It stands out for its 15-position headrest and 4-position seat depth, which let it grow from a small preschooler to a big kid. It is a heavy seat at about 24 lb in harness mode, so it is best left installed in one car rather than moved often. Against rivals like the Graco Nautilus and Evenflo Maestro, it offers more headrest adjustment but a narrower harness weight ceiling of 65 lb.
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Lowest price we've seen: $239.99 on Nov 11 at Target. Tracked across 1 store since Nov 11.
Owner feedback is limited, but the seat is generally seen as a solid value for its three modes and adjustable fit. Common complaints center on its weight and bulk.
The Joie Latch SI 3-in-1 Harness Booster Car Seat changes with the child. It works as a harness booster, a highback booster and a backless booster. It includes Advanced Side Impact Protection (ASIP).
The seat has a 15-position headrest and a 4-position adjustable seat depth. In harness mode it fits children from 30 lb. up to 65 lb. and from 27 up to 49 inches tall. As a highback booster it fits children from 40 lb. up to 100 lb. and up to 57 inches tall. As a backless booster it fits children from 50 lb. up to 120 lb. and from 43 up to 60 inches tall.













