• A beige StepUp car seat shown from multiple angles on a white background, with small teal side-release buttons and printed branding including 'For You Little One' and 'StepUp'.
  • Latte beige i-Size booster car seat installed in car, with green belt guides
  • Latte beige booster car seat reclined side view with green belt guide and padded armrests
  • A smiling young boy sits in a beige car seat with a black harness inside a black car, with green trees visible through the window background.
  • Latte beige booster car seat side view with instruction panel and green belt guide
  • Latte beige high-back booster car seat with side head supports and StepUp branding
  • Latte beige booster car seat side view with green belt guide and base adjustment
  • Latte beige high-back booster car seat front three-quarter view with green guides
  • Latte beige booster car seat with headrest controls, side wings, and green guide
  • Latte beige booster car seat rear side view with instruction label and green belt guide
  • Latte beige booster car seat rear side view showing ISOFIX openings and green belt guide
  • Latte beige high-back booster car seat front view with padded headrests and StepUp
  • Latte beige booster car seat front close-up with chevron seat panel and StepUp
  • Latte beige i-Size booster car seat with green belt guides and side wings
For Your Little One

For Your Little One Stepup I-Size Isofix 2/3 Car Seat Booster Seat - Latte Beige (4-12 Years)

Good to know i-Size ISOFIX Group 2/3 | Secure Click-In Fit | 4–12 Years
£49.99 £79.99 Save 37% Out of stock

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For Your Little One Stepup i-Size ISOFIX Group 2/3 Car Seat — Latte Beige. Designed to keep your child safe and comfortable from 100 cm to 150 cm (approximately 4 to 12 years), the Stepup i-Size ISOFIX 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 a rock-solid ISOFIX connection every single time.

Why Parents Love It

  • i-Size Certified (UN R129) — Exceeds current EU safety regulations for enhanced protection
  • ISOFIX Installation — Rigid, click-in connection eliminates installation errors for total peace of mind
  • 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
  • Latte Beige Finish — Warm, neutral tone that complements any car interior beautifully

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 rigid ISOFIX connection anchors the seat directly to your car's chassis, removing the risk of incorrect belt-only installation.

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: ISOFIX
  • Facing Direction: Forward-facing
  • Cover: Removable & machine washable
  • Colour: Latte Beige
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: ISOFIX — check your vehicle is ISOFIX compatible before purchase
Always check your child's height against the seat's headrest guide before use
1x Stepup i-Size ISOFIX Car Seat (Latte Beige)
1x User Manual
✔ i-Size (R129) Certified — Exceeds current EU safety regulations
✔ Rigid ISOFIX connection — click-in installation eliminates fitting errors
✔ 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
Order before 2.30pm Same-day dispatch Monday–Friday
FREE UK Delivery On orders over £49.99
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A beige StepUp car seat shown from multiple angles on a white background, with small teal side-release buttons and printed branding including 'For You Little One' and 'StepUp'.
For Your Little One Stepup I-Size Isofix 2/3 Car Seat Booster Seat - Latte Beige (4-12 Years)
£49.99
£49.99 -37%
£79.99
Supporting families since 2011
Trusted by families across the UK
Read our customer reviews on Trustpilot

Same-Day Dispatch

Order before 2.30pm Monday–Friday

FREE UK Delivery

UK mainland orders over £49.99

Trusted by UK Families

A reliable place to shop for little ones

Easy Returns

Simple returns for peace of mind

The Black Friday Edition

Made for Little Ones. Designed for Family Life.

Discover the features, thoughtful details and benefits that make this product a family favourite.

i-Size Safety That Exceeds the Standard

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. Paired with rigid ISOFIX connectors, the seat locks directly into your car's chassis for a secure, error-free fit every time you travel.
For Your Little One Stepup I-Size Isofix 2/3 Car Seat Booster Seat - Latte Beige (4-12 Years)

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

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 warm Latte Beige finish brings a soft, neutral elegance to any car interior and pairs beautifully with modern family vehicles.
Designed for family life Comfort & practicality Made for everyday adventures

Customers consistently praised this ISOFIX booster seat for children ages 4-12. Reviewers highlighted "easy to install" fitting, sturdy construction, and comfortable design for longer journeys. The Latte Beige color received positive feedback for its attractive appearance. Customers appreciated the quality, value, and straightforward daily use.

  • Really pleased with this booster seat. It feels sturdy and looks lovely in the car.
  • Easy to install with the ISOFIX points and very straightforward to use day to day.
  • Feels sturdy without being too bulky and my child is comfortable on longer journeys.
  • 5 stars: 33 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
E
Emma T.
Great booster seat

Really pleased with this booster seat. It feels sturdy and the Latte Beige colour looks lovely in the car.

S
Sophie B.
Really pleased with it

Easy to install with the ISOFIX points and very straightforward to use day to day.

L
Laura W.
Easy to install

My child seems really comfortable in it and there is plenty of room as they grow.

C
Charlotte D.
Lovely colour

The Latte Beige colour is really nice in person and the seat feels well made.

R
Rebecca E.
Very happy

Very happy with the quality. It feels secure once fitted and is easy to buckle up.

H
Hannah T.
Good quality seat

A good solid booster seat and the ISOFIX fitting makes installation nice and simple.

S
Sarah R.
Just what we needed

Just what we needed for our older child. Comfortable, practical and easy to use.

A
Amy J.
Comfortable and sturdy

Feels sturdy without being too bulky and my child is comfortable on longer journeys.

R
Rachel W.
Great for everyday use

We use it every day and it has been really straightforward. Very pleased with it.

J
Jessica H.
Looks really nice

Looks really smart in the car. The beige shade is subtle and nicer than I expected.

C
Claire T.
Easy to use

Easy to get fitted and simple to use when getting in and out of the car.

L
Lucy W.
Good value

Good value for the quality. It feels strong and well put together.

K
Katie H.
Very impressed

Really impressed when it arrived. The finish is lovely and it feels like a quality seat.

N
Nicola M.
Perfect for our car

Fits our car really well and doesn't feel too wide or bulky.

E
Emily C.
Quick delivery

Delivery was really quick and the seat arrived well packed and in perfect condition.

L
Lauren L.
Arrived quickly

Arrived sooner than expected which was great. Easy to set up once it was out of the box.

O
Olivia B.
Helpful customer service

Had a question about fitting and customer service were really helpful and resolved it quickly.

C
Chloe W.
Great booster seat

Really pleased with this booster seat. It feels sturdy and the Latte Beige colour looks lovely in the car.

M
Megan K.
Really pleased with it

Easy to install with the ISOFIX points and very straightforward to use day to day.

A
Alice S.
Easy to install

My child seems really comfortable in it and there is plenty of room as they grow.

N
Natalie A.
Lovely colour

The Latte Beige colour is really nice in person and the seat feels well made.

V
Victoria H.
Very happy

Very happy with the quality. It feels secure once fitted and is easy to buckle up.

G
Grace M.
Good quality seat

A good solid booster seat and the ISOFIX fitting makes installation nice and simple.

B
Bethany W.
Just what we needed

Just what we needed for our older child. Comfortable, practical and easy to use.

L
Louise C.
Comfortable and sturdy

Feels sturdy without being too bulky and my child is comfortable on longer journeys.

S
Samantha H.
Great for everyday use

We use it every day and it has been really straightforward. Very pleased with it.

K
Kelly M.
Looks really nice

Looks really smart in the car. The beige shade is subtle and nicer than I expected.

J
Joanne E.
Easy to use

Easy to get fitted and simple to use when getting in and out of the car.

A
Abigail P.
Good value

Good value for the quality. It feels strong and well put together.

J
Jennifer C.
Very impressed

Really impressed when it arrived. The finish is lovely and it feels like a quality seat.

M
Melissa C.
Perfect for our car

Fits our car really well and doesn't feel too wide or bulky.

S
Stephanie B.
Quick delivery

Delivery was really quick and the seat arrived well packed and in perfect condition.

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