# What are the lightest weight travel system car seats available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the lightest weight travel system car seats available?

## Products

### Doona Doona X Car Seat & Stroller
```yaml
product: doona-doona-x-car-seat-stroller
brand: Doona
price_gbp: 369.07
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 18.3
adjustable_handlebar: Yes, 2 height positions
maximum_child_weight: 28
seat_recline_positions: 3
folded_stroller_dimensions: 28.5 x 17.3 x 18 in
```

- **Price:** £369.07 [^1]
- **Summary:** The Doona X combines a rear-facing infant car seat and stroller, transforming between modes in seconds. It offers three stroller recline positions, an adjustable handlebar, integrated harness and headrest, shock absorbers, and side-impact protection, making it well suited to parents who travel frequently with infants.
- **Ideal For:** The Doona X suits travelers seeking a lightweight all-in-one travel system because it weighs 18.3 lbs, folds to 28.5 x 17.3 x 18 in, and converts from car seat to stroller without a separate stroller frame.
- **Additional Sources:** [^2], [^3]

---
## References & Sources
[^1]: Doona, accessed 2026-09-06. https://doona.shop/products/doona-x-car-seat-stroller-nitro-black
[^2]: Mamas & Papas UAE, accessed 2026-09-06. https://mamasandpapas.ae/doona-x-infant-car-seat-and-stroller---nitro-black-217982675.html
[^3]: ChelinoBaby, accessed 2026-09-06. https://www.chelino.co.za/products/doona-x-car-seat-stroller