Harmony Defender 360° 3-in-1 Deluxe vs Safety 1st Boost-and-Go
Side-by-side specs from each maker.
Harmony Defender 360° 3-in-1 DeluxeList price not published
Only the differences are shown.
| Harmony Defender 360° 3-in-1 Deluxe | Safety 1st Boost-and-Go | |
|---|---|---|
| Type | Harness-to-booster | Harness-to-booster |
| Forward-facing weight | 26.5–65 lb | 30–65 lb |
| Forward-facing height | 27–57 in | 34–49 in |
| Booster weight | 40–120 lb | 40–100 lb |
| Booster height | 34–57 in | 43–57 in |
| Head rule | Harness mode: ears must be below the top of the headrest at its maximum height | The tops of your child's ears MUST be below the top of the car seat's headrest. (booster: not to be used if the child's ears are above the top of the booster seat's headrest) |
| Installation | UAS (lower anchors), children up to 50 lb, vehicle lap-and-shoulder belt, vehicle lap-only belt, top tether with harness | LATCH (lower anchor belt) forward-facing + top tether, seat belt (lap belt) forward-facing + top tether, seat belt (lap/shoulder) forward-facing + top tether, booster: vehicle lap/shoulder belt |
| Load leg | Not listed | No |
| Anti-rebound bar | Not listed | No |
| Rotates | Not listed | No |
| Aircraft label | Not listed | Certified for aircraft, per the maker |
| Expires after | 10 years | 10 years |
Harmony Defender 360° 3-in-1 Deluxe
Harmony forward-facing 3-in-1 seat that converts from a harness seat to a high-back and then backless booster.
- Maker states forward-facing use with harness and two booster modes
- Manual covers lower-anchor use up to 50 lb
- Manual gives no seat weight or dimensions
Ask the meadow
Defender 360° 3-in-1 Deluxe or Boost-and-Go?
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 Defender 360° 3-in-1 Deluxe or the Boost-and-Go?
The Harmony Defender 360° 3-in-1 Deluxe: it goes forward-facing with a harness, then booster, up to 120 lb. The Boost-and-Go goes forward-facing with a harness, then booster, up to 100 lb. The Defender 360° 3-in-1 Deluxe expires after 10 years.
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