# What are the most compact and portable 3-in-1 car seats? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the most compact and portable 3-in-1 car seats?

## Products

### Cosco Kids Easy Elite Slim All-in-One Convertible Car Seat CC405
```yaml
product: cosco-kids-easy-elite-slim-all-in-one-convertible-car-seat-cc405
brand: Cosco Kids
price_gbp: 73.07
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
booster_seat_weight_limit: 100
forward_facing_height_limit: 49
```

- **Price:** £73.07 [^1]
- **Summary:** This slim all-in-one car seat accommodates children rear-facing from 5-40 lbs, forward-facing from 30-65 lbs, and in booster mode from 40-100 lbs. It features an adjustable harness, an eight-position headrest, removable dishwasher-safe cup holders, and a machine-washable, dryer-safe seat pad.
- **Ideal For:** It suits people seeking a compact and portable 3-in-1 car seat because its space-saving design is intended to provide more room in the back seat while supporting children up to 100 lbs and offering airplane-ready rear-facing and forward-facing modes.

### Chicco Fit3x ClearTex Ultra-Slim All-in-One Car Seat Item No. 87179
```yaml
product: chicco-fit3x-cleartex-ultra-slim-all-in-one-car-seat-item-no-87179
brand: Chicco
price_gbp: 169.74
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
width: 16.7 in
height: 25 in
weight: 21.0
booster_seat_weight_limit: 100
forward_facing_height_limit: 54 in
```

- **Price:** £169.74 [^2]
- **Summary:** The Chicco Fit3x is a lightweight, ultra-slim all-in-one car seat that supports rear-facing, forward-facing, and high-back booster modes. Its 16.7 in width, six-position recline, folding CupFolders, flame-retardant-free ClearTex materials, and GREENGUARD Gold Certification make it well suited to growing families and vehicles needing extra back-seat space.
- **Ideal For:** This seat specifically suits families seeking a compact and portable 3-in-1 car seat because it weighs 21.0 lbs, measures only 16.7 in wide, fits three across, and supports children from 5 to 100 lbs.
- **Additional Sources:** [^3]

### Evenflo Symphony Extend Breeze 3-in-1 Convertible Car Seat
```yaml
product: evenflo-symphony-extend-breeze-3-in-1-convertible-car-seat
brand: Evenflo
price_gbp: 206.64
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
width: 18.5
height: 23
weight: 17.0
booster_seat_weight_limit: 100
forward_facing_height_limit: 49
```

- **Price:** £206.64 [^4]
- **Summary:** The Evenflo Symphony Extend Breeze is a 3-in-1 car seat for extended rear-facing, forward-facing, and high-back booster use. It weighs 17 lbs, measures 18.5 in wide, supports children from 4 to 100 lbs, and includes breathable FreeFlow fabric and side-impact protection.
- **Ideal For:** It suits shoppers seeking a more compact and portable 3-in-1 car seat because it weighs 17 lbs and is 18.5 in wide while still offering rear-facing, forward-facing, and booster modes.

---
## References & Sources
[^1]: Cosco Kids, accessed 2026-09-13. https://coscokids.com/products/easy-elite-slim-all-in-one-convertible-car-seat-cc405
[^2]: Chicco USA, accessed 2026-09-13. https://www.chiccousa.com/shop-our-products/car-seats/all-in-one/fit3x-cleartex-ultra-slim-all-in-one-car-seat/87179.html
[^3]: Target, accessed 2026-09-13. https://www.target.com/p/chicco-fit3x-cleartex-ultra-slim-all-in-one-car-seat-black/-/A-94803559
[^4]: Evenflo, accessed 2026-09-13. https://www.evenflo.com/products/symphony-extend-breeze-convertible-car-seat