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Product guide

Maxi-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.
Price
£220.95Save 15%

Reference price: £259.99

Price checked: 14 Nov 2026

View offer

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
Identity
BrandMaxi-Cosi
Model8442508110
ColourBlack Onyx
Dimensions and installation
Dimensions listed76D x 44W x 64H centimetres
Weight listed3.99 Kilograms
Installation typeISOFIX
OrientationRearward facing
Materials and protection
Material listedPA6 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.
Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx · photo 2
Additional product photo 2

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.

Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx · photo 3
Additional product photo 3

Alternative options

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£50.99

-15%
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Product details in Markdown