Graco Affix Highback vs Diono Solana 2
Both are booster car seats — here are their published manufacturer specs side by side.
| Spec | Graco Affix Highback | Diono Solana 2 |
|---|---|---|
| Stage | Booster | Booster |
| Narrow (3-across) | – | ✓ |
| Extended rear-facing | – | – |
| FAA-approved | – | – |
| Lightweight / travel | – | ✓ |
How they differ
- the Diono Solana 2 is listed narrow (roughly ≤17″) for fitting three across a back seat; the Graco Affix Highback isn't listed narrow
- the Diono Solana 2 is the lighter, more travel-friendly model
Where to buy
Check the Graco Affix Highback price on Amazon →
Check the Diono Solana 2 price on Amazon →
FAQ
What's the difference between the Graco Affix Highback and the Diono Solana 2?
The Graco Affix Highback lists none of the narrow / extended-rear-facing / FAA / lightweight flags; the Diono Solana 2 is narrow for 3-across, lightweight/travel. Both are booster car seats.
Which fits three across, the Graco Affix Highback or the Diono Solana 2?
The Diono Solana 2 is listed narrow (~≤17″) for 3-across; the Graco Affix Highback isn't. Three-across fit still depends on your exact vehicle — confirm before buying.
Which is right for my car and child, the Graco Affix Highback or the Diono Solana 2?
That depends on your specific vehicle and child — this page compares published manufacturer specs only, not fit or safety. Check the seat manual, your vehicle manual, NHTSA's car-seat finder and ideally a certified CPST before deciding.
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