Graco Nautilus 65 3-in-1 Harness Booster

Our score 9.72 / 10

Research by Peter Crona Last updated Method How we research

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10-29.5 kg/22-65 lb harness, then 18.1-45.4 kg/40-100 lb high-back/backless booster.

Graco Nautilus 65 3-in-1 Harness Booster

Pros

  • 29.5 kg/65 lb harness limit gives more runway before booster-only riding
  • High-back and backless booster modes extend the seat after harness use

Cons

  • Forward-facing only, so it starts after rear-facing is finished
  • Bulk and buckle access need checking in tighter back seats
Seat Use
Toddler, Booster
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Graco Nautilus 65 is the harness-booster to compare when you want more harness runway before moving to a booster. It starts as a forward-facing harness seat, then becomes a high-back booster and finally a backless booster, so it suits families planning the post-rear-facing years in one seat. The fit checks are practical: make sure the harness height works for the child now, the top tether and vehicle belt installation are straightforward, and the booster mode can be buckled without fighting adjacent seats.