# 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.

- [Original product page](https://bargainpostbox.co.uk/product/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [View offer](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Maxi-Cosi
- Model: 8442508110
- Category: Baby > Strollers & Car Seats > Child Car Seats
- Price: 220.95 GBP
- Previous price: 259.99 GBP
- Discount: 15%
- Price checked: 2026-11-14T09:47:58.756Z

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## 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

- 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.

## Specifications

### Identity
- Brand: Maxi-Cosi
- Model: 8442508110
- Colour: Black Onyx
### Dimensions and installation
- Dimensions listed: 76D x 44W x 64H centimetres
- Weight listed: 3.99 Kilograms
- Installation type: ISOFIX
- Orientation: Rearward facing
### Materials and protection
- Material listed: PA6 10%, PP 70%, POM 11%, ABS 5%, staal 4%

## Before you buy

- 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.

## 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

- [Maxi-Cosi Pebble 360 i-Size, Baby Car Seat, 40–83 cm, Essential Graphite \| 360° Newborn Car Seat, 0–15 Months, One-Hand Rotation, ClimaFlow, Easy-in Harness, G-CELL Side Impact Protection](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Maxi-Cosi Pebble S i-Size, Baby Car Seat, 40–83 cm, Tonal Black \| Lightweight Newborn Car Seat \(3.2 kg\), 0–15 Months, Click & Go Installation, G-CELL Side Impact Protection, Baby Inlay](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Maxi-Cosi CabrioFix i-Size, Baby Car Seat, 0–12 kg, Essential Black \| Lightweight Newborn Car Seat \(3.2 kg\), 0–12 Months, Large Sun Canopy, Extra Padded Seat, Fits Most Maxi-Cosi Pushchairs](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Maxi-Cosi CabrioFix i-Size ISOFIX Base, 40–75 cm, Black \| Compatible with the Maxi-Cosi CabrioFix i-Size Baby Car Seat, 0–12 kg, Installation Feedback, Click & Go](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Maxi-Cosi Mica 360 S Comfort, ISOFIX Car Seat, 40–105 cm, Authentic Black \| Swivel Car Seat, FlexiSpin Rotation, 0–4 Years, 5 Recline Positions, G-CELL Protection, Easy-in Harness, Breathable Fabrics](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Maxi-Cosi Emerald 360 S i-Size, ISOFIX Car Seat, 40–150 cm, Tonal Graphite \| Baby & Child Car Seat, 0–12 Years, FlexiSpin 360°, 4 Recline Positions, G-CELL Side Impact Protection](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Maxi-Cosi Nomad XL Plus, Evolutive Car Seat, 76–150 cm, Authentic Black \| Foldable Travel Car Seat, 15 Months–12 Years, Ultra-Compact & Lightweight, G-CELL Side Impact Protection, Travel Bag](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [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](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Reecle 360 Swivel Baby Car Seat with ISOFIX, Approx. 0-12 Years \(0-36 kg\)](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Reecle 360 Swivel Child Car Seat with ISOFIX, 40-150cm \(0-12Years\), R129](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [Reecle 360 Swivel Baby Car Seat with ISOFIX, Group 0+1/2/3 \(0-36 kg\), Approx. 0-12 Years \(Black\)](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)
- [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](https://bargainpostbox.co.uk/visit/maxi-cosi-pebble-slide-pro-baby-car-seat-black-onyx)

## Images

![Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx — 1](https://bargainpostbox.co.uk/i/sqW6Mv4jN9DKCsfq7mUs_j98rmJLPvgx6xcU0L6GUbi_zTQw3qpTz0G16LfGQdfpFpAFJFpuaiBiyoTL2b4cLJdnnDIytXITtfz0e3TwCGu8mKO1bROdGwlZ.jpg)

![Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx — 2](https://bargainpostbox.co.uk/i/gd3G7MHzHsADS59UL4LrHf6F_EHVbxgMYb_C-qkBeZzauCwRNBjQNXAR2XgDD8su8Di5vH26_f4J2ay46S_Piau1Ky5SbhupfzG_pyu-s1o3XgDz.jpg)

![Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx — 3](https://bargainpostbox.co.uk/i/aD86LEn1qcogebHfxwrAQEDjbur-kkdf5eILEVEWEPNuLbpsJ3_PXGWvB7fB-jYXp6wr8tn8pMaRw6ltcb1Vo-6jIHUaV2T7hcbjNbZfOMyUV9ci.jpg)

![Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx — 4](https://bargainpostbox.co.uk/i/66d7tGas7eYhkW9QIlPiOM6iFMl3Wa3_KlS6wnal04WsFIVl7_2_lQyS-rQvzmXn6YlZL4CC9_MMADsTbUoPCMStWdHlQCKBcUxfGgka1G8QgZV1.jpg)

![Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx — 5](https://bargainpostbox.co.uk/i/6L5MDCVqSPGSRElczk3UhFwFLo8zAyUfZPxIvKECos3zo9cGisbESPAA1cl5hll4MnGUmdNG2HciSSz0bWahJHh8XUEoWRUe5tlmlTV2r153bQjf.jpg)

![Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx — 6](https://bargainpostbox.co.uk/i/hf_OO-Y2O-CwxJhAJcoRIbRVL9iVkKkhjPxKzB04BvB_4ZqYuoVRkdBKjNPdqVSasXpR8gxcClvfbDsZKNGAUO1EixY8gIeYoy1p2ms7DoLnSpoF.jpg)

![Maxi-Cosi Pebble Slide Pro baby car seat, 3.9 kg, Black Onyx — 7](https://bargainpostbox.co.uk/i/QNH9BvODzWrllwEFPSGE06sB3QmYWqMHNRaxGcmx5ForCrgdVGGnssGZu2MWMWiLMt0tbZ5SeQY_w55SR8xbHu_sRW6Dl4sSKyUfCgvQ4XSjKHuQ.jpg)