1 / 7Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx
Black Onyx: Maxi-Cosi Pebble Slide Pro is a rearward-facing baby car seat with a listed weight of 3.99 kg and dimensions of 76D x 44W x 64H centimetres. It is described as lie-flat and can slide out 27 cm when paired with the separately sold FamilyFix Slide Pro base.
At a glance
- The listing describes a full lie-flat position across driving, carrying, flying and strolling modes.
- SlideTech² is described as extending the seat 27 cm when used with the separately sold FamilyFix Slide Pro base.
- ClimaFlow ventilation panels, breathable foam and mesh fabrics are listed as comfort features.
Pros and cons
Pros
- The listed 3.99 kg weight may make carrying the seat between car and pushchair more manageable.
- The lie-flat claim covers several modes, offering flexibility for families who use the seat beyond the car.
Technical specifications
8 specifications| Brand | Maxi-Cosi |
|---|---|
| Model | 8442508110 |
| Colour | Black Onyx |
| Dimensions listed | 76D x 44W x 64H centimetres |
|---|---|
| Weight listed | 3.99 Kilograms |
| Installation type | ISOFIX |
| Orientation | Rearward facing |
| Material listed | PA6 10%, PP 70%, POM 11%, ABS 5%, staal 4% |
|---|
What to know before buying
Listing details to confirm
The title and feature copy give a 3.9 kg weight, while the technical details list 3.99 Kilograms. The age and size claims are also inconsistent: the item highlight says from birth to 2 years and 40-87 cm, while the metadata says age range “Kid” and recommends a maximum weight of 13 Kilograms. Confirm the applicable child-size guidance, installation requirements and exact listed weight before purchase. The 27 cm SlideTech² movement requires the separately sold FamilyFix Slide Pro base.
Who is it for?
A good fit for
- Families looking for a rearward-facing infant seat that the listing describes as lie-flat across car, carry and stroll modes.
- Buyers who prioritise a relatively light seat for carrying between a vehicle and pushchair, while checking the listed weight discrepancy.
Less suited to
- Buyers who need the sliding mechanism without purchasing a compatible FamilyFix Slide Pro base.

Frequently asked questions
Does the Pebble Slide Pro slide out on its own?
No. The listing says SlideTech² moves the seat out by 27 cm when paired with the separately sold FamilyFix Slide Pro base.
What is the listed weight?
The title and feature copy say 3.9 kg, while the technical details list 3.99 Kilograms. Check the exact specification on the selected listing.
What child size is it listed for?
The item highlight states from birth to 2 years and 40-87 cm, but the metadata also says “Kid” and gives a maximum weight recommendation of 13 Kilograms. Confirm the appropriate range and usage guidance before buying.

Alternative options

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£188.96

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£104.97

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Maxi-Cosi FamilyFix 360 i-Size 360 ISOFIX Base, 40–105 cm, Black | Rotating Car Seat System, 0–4 Years, One-Hand FlexiSpin Rotation, TravelSafe Rotation Control, Click & Go
£139.95

Reecle 360 Swivel Baby Car Seat with ISOFIX, Approx. 0-12 Years (0-36 kg)
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Graco SnugLite 2 i-Size R129 Infant car seat, Suitable from 40-75cm, Birth to Approx 12 Months, Lightweight at only 3.3kg, Compatible with SnugTurn or SnugLite ISOFIX Bases, Midnight Fashion
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