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For Your Little One

For Your Little One Stepup I-Size Belted 2/3 Car Seat Booster Seat - Blush Rose (4-12 Years)

Good to know i-Size Belted Group 2/3 | No ISOFIX Needed | 4–12 Years
£34.99 £69.99 Save 50% Out of stock

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Suitable for children 100–150cm in height (approx. 4–12 years)

Group 2: 15–25kg (approx. 4–6 years) — Forward-facing
Group 3: 22–36kg (approx. 6–12 years) — High-back booster mode

Installation: 3-point seatbelt — compatible with virtually all vehicles, no ISOFIX required
Always check your child's height against the seat's headrest guide before use
1x Stepup i-Size Belted Car Seat (Blush Rose)
1x User Manual
✔ i-Size (R129) Certified — Exceeds current EU safety regulations
✔ Universal belted installation — no ISOFIX required, fits virtually any car
✔ Fits children 100–150cm (approx. 4–12 years) — Group 2 & 3
✔ Deep padded side-impact protection wings
✔ One-hand adjustable headrest — multiple height positions, no tools needed
✔ Premium breathable padding for all-day comfort
✔ Removable, machine-washable seat cover

For Your Little One Stepup i-Size Belted Group 2/3 Car Seat — Blush Rose. Designed to keep your child safe and comfortable from 100 cm to 150 cm (approximately 4 to 12 years), the Stepup i-Size Belted car seat is the last car seat you'll ever need to buy for this stage. Built to the latest UN R129 i-Size safety standard, it delivers superior side-impact protection and installs simply and securely using your car's existing seatbelt — no ISOFIX required.

Why Parents Love It

  • i-Size Certified (UN R129) — Exceeds current EU safety regulations for enhanced protection
  • Seatbelt Installation — Fits any car without ISOFIX, using your vehicle's existing 3-point belt
  • Fits 100–150 cm (approx. 4–12 years) — Grows with your child through Group 2 and Group 3 stages
  • Side-Impact Protection — Deep, padded side wings absorb and deflect impact energy away from your child
  • One-Hand Adjustable Headrest — Multiple height positions adapt quickly as your child grows, no tools required
  • Removable, Machine-Washable Cover — Easy to keep fresh and clean
  • Blush Rose Finish — Soft, elegant tone that adds a touch of warmth to any car interior

Safety You Can Trust

The Stepup i-Size meets the stringent UN R129 regulation, which requires extended side-impact testing and a minimum height requirement — giving your child significantly more protection than older Group 2/3 seats. The belt-only installation means this seat is compatible with virtually any vehicle, making it a versatile choice for families with multiple cars.

Comfort for Every Journey

Thick, breathable padding and a one-hand adjustable headrest with multiple height positions mean your child can settle in comfortably whether it's the school run or a long motorway trip.

Specifications

  • Safety Standard: UN R129 (i-Size)
  • Child Height: 100–150 cm
  • Approx. Age: 4–12 years
  • Installation: Seatbelt (belted)
  • Facing Direction: Forward-facing
  • Cover: Removable & machine washable
  • Colour: Blush Rose
Blush rose 2/3 booster car seat with headrest, armrests, and green belt guides
For Your Little One Stepup I-Size Belted 2/3 Car Seat Booster Seat - Blush Rose (4-12 Years)
£34.99
£34.99 -50%
£69.99
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Why you'll love it

Designed around family life

Discover the features, thoughtful details and benefits designed to make life with little ones easier.

i-Size Safety That Exceeds the Standard
01

i-Size Safety That Exceeds the Standard

The Stepup i-Size is certified to UN R129 — the latest and most rigorous car seat safety regulation in Europe. Unlike older Group 2/3 seats, i-Size requires mandatory side-impact testing, meaning your child is protected from impacts that traditional standards don't even test for. The belt-only installation means it fits virtually any car, making it an ideal choice for families without ISOFIX or those with multiple vehicles.
For Your Little One Stepup I-Size Belted 2/3 Car Seat Booster Seat - Blush Rose (4-12 Years)
02

Grows With Your Child From 4 to 12 Years

Covering 100 cm to 150 cm in height, the Stepup takes your child through both Group 2 and Group 3 stages in a single seat — no mid-stage upgrades needed. The one-hand adjustable headrest moves in seconds to match your child's growing height, while the deep padded side wings reposition automatically to keep protection exactly where it's needed at every stage.
Comfort Built for Real Family Life
03

Comfort Built for Real Family Life

The breathable, premium-padded cover keeps them cool in summer and cosy in winter — and when it needs a refresh, simply remove it and pop it in the washing machine at 30°C. The soft Blush Rose finish adds a touch of gentle elegance to any car interior, making every journey feel a little more special.
Designed for family life Comfort & practicality Made for everyday adventures

Customers praised this I-Size booster seat for children 4-12 years as "sturdy" and "comfortable." The Blush Rose colour is "lovely" and "really pretty." Shoppers highlighted it's "easy to fit with the seat belt" and "straightforward to use for everyday journeys." Many noted good value for quality and quick delivery.

  • A good solid booster seat and my child seems very comfortable in it.
  • Easy to fit with the seat belt and straightforward to use for everyday journeys.
  • Good value for the quality. Feels strong and nicely finished.
  • 5 stars: 25 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
E
Emma T.
Lovely booster seat

Really pleased with this booster seat. The Blush Rose colour is lovely and looks great in the car.

S
Sophie B.
Really pleased

Easy to fit with the seat belt and straightforward to use for everyday journeys.

L
Laura W.
Easy to fit

A good solid booster seat and my child seems very comfortable in it.

C
Charlotte D.
Great little seat

Really happy with the quality and the Blush Rose colour is even nicer in person.

R
Rebecca E.
Love the colour

The pink colour is lovely and exactly what I was hoping for. The seat itself feels sturdy too.

H
Hannah T.
Very happy with it

Very happy with it. It feels secure once fitted and is easy for my child to use.

S
Sarah R.
Good quality

Good quality booster seat that feels well made and comfortable.

A
Amy J.
Looks lovely

Looks lovely in the car and the Blush Rose shade is really pretty.

R
Rachel W.
Just what we needed

Just what we needed for our older child. Easy to fit and not too bulky.

J
Jessica H.
Comfortable seat

Comfortable on longer journeys and easy to buckle up.

C
Claire T.
Easy to use

Very straightforward to use and works well for everyday trips.

L
Lucy W.
Good value

Good value for the quality. Feels strong and nicely finished.

K
Katie H.
Very impressed

Really impressed with the overall quality and how simple it was to set up.

N
Nicola M.
Perfect for our car

Fits our car well and gives our child plenty of room.

E
Emily C.
Nice and sturdy

Nice sturdy seat and easy to use for school runs and longer journeys.

L
Lauren L.
Great everyday seat

Great everyday booster seat and the pink colour is a lovely touch.

O
Olivia B.
Really happy

Really happy with the seat. It looks smart and feels secure.

C
Chloe W.
Lovely pink colour

Lovely pink colour and a practical seat that is easy to use.

M
Megan K.
Simple to fit

Simple to fit and easy to move between journeys when needed.

A
Alice S.
Good purchase

A very good purchase. Comfortable, sturdy and looks great.

N
Natalie A.
Quick delivery

Delivery was really quick and the seat arrived well packed.

V
Victoria H.
Arrived quickly

Arrived sooner than expected which was great. Very pleased with the seat.

G
Grace M.
Helpful support

Had a question about the seat and customer service were really helpful and sorted it quickly.

B
Bethany W.
Great colour

Support answered my query quickly and were really helpful.

L
Louise C.
Very pleased

Overall very pleased. The seat feels good quality and the Blush Rose colour is lovely.

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