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10 bestHarmony Booster Seatof December 2025

112M consumers helped this year.

1

Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion

Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion

Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion

Graco

9.9

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2

Jovikids I-Size Booster Seat for Car with ISOFIX, 125-150cm (Group 2/3, 3-12 Years), Portable Booster Seat for Kids, Comfortable, Compact, Convenient for Everyday Use, Great for Travel, ECE R129, Blue

Jovikids I-Size Booster Seat for Car with ISOFIX, 125-150cm (Group 2/3, 3-12 Years), Portable Booster Seat for Kids, Comfortable, Compact, Convenient for Everyday Use, Great for Travel, ECE R129, Blue

Jovikids I-Size Booster Seat for Car with ISOFIX, 125-150cm (Group 2/3, 3-12 Years), Portable Booster Seat for Kids, Comfortable, Compact, Convenient for Everyday Use, Great for Travel, ECE R129, Blue

Jovikids

9.8

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3

Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey

Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey

Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey

COZY N SAFE

9.7

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4

Maxi-Cosi Tanza Child Seat with ISOFIX, Growing Booster Seat with G-Cell Side Impact Protection, Group 2/3 Car Seat, Can Be Used from Approx. 3.5 - 12 Years, (Approx. 100 - 150 cm), Grey

Maxi-Cosi Tanza Child Seat with ISOFIX, Growing Booster Seat with G-Cell Side Impact Protection, Group 2/3 Car Seat, Can Be Used from Approx. 3.5 - 12 Years, (Approx. 100 - 150 cm), Grey

Maxi-Cosi Tanza Child Seat with ISOFIX, Growing Booster Seat with G-Cell Side Impact Protection, Group 2/3 Car Seat, Can Be Used from Approx. 3.5 - 12 Years, (Approx. 100 - 150 cm), Grey

Maxi-Cosi

9.5

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40% off

5

Cosatto Zoomi Car Seat - Group 1 2 3, 9-36 kg, 9 Months-12 Years, Forward Facing, Unicorn Land

Cosatto Zoomi Car Seat - Group 1 2 3, 9-36 kg, 9 Months-12 Years, Forward Facing, Unicorn Land

Cosatto Zoomi Car Seat - Group 1 2 3, 9-36 kg, 9 Months-12 Years, Forward Facing, Unicorn Land

Cosatto

9.4

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OtherRelated productsUp to 35% off

Graco Affix R44 Highback Booster car seat with isoCatch connectors, Suitable from approx. 4 to 12 years (15-36kg), Stargazer fashion

Graco Affix R44 Highback Booster car seat with isoCatch connectors, Suitable from approx. 4 to 12 years (15-36kg), Stargazer fashion

My Child Brundle Group 2/3 Booster, Grey, 700 g

My Child Brundle Group 2/3 Booster, Grey, 700 g

globalkids Booster Seat with ISOFIX - i-Size Car Seat for 3, 6 to 12 Years Approx. Portable Child Car Seat, R129, Comfortable for Kids, Compact, Lightweight, Ideal for Travel (Black)

globalkids Booster Seat with ISOFIX - i-Size Car Seat for 3, 6 to 12 Years Approx. Portable Child Car Seat, R129, Comfortable for Kids, Compact, Lightweight, Ideal for Travel (Black)

Jovikids i-Size Booster Seat with ISOFIX, Suitable for Kids 100-150cm (Approx. 3 to 12 Years), Adjustbale Height and Width, Portable Toddler Car Seat for Travel, Compact & Folding, ECE R129

Jovikids i-Size Booster Seat with ISOFIX, Suitable for Kids 100-150cm (Approx. 3 to 12 Years), Adjustbale Height and Width, Portable Toddler Car Seat for Travel, Compact & Folding, ECE R129

5% off

6

Maxi-Cosi Kore i-Size High Back Booster Seat, 3.5 - 12 years, 100 - 150 cm, ISOFIX Car Seat, Adjustable Height/Width, Side Protection System Plus, Quick & Easy Buckle Up, Authentic Graphite

Maxi-Cosi Kore i-Size High Back Booster Seat, 3.5 - 12 years, 100 - 150 cm, ISOFIX Car Seat, Adjustable Height/Width, Side Protection System Plus, Quick & Easy Buckle Up, Authentic Graphite

Maxi-Cosi Kore i-Size High Back Booster Seat, 3.5 - 12 years, 100 - 150 cm, ISOFIX Car Seat, Adjustable Height/Width, Side Protection System Plus, Quick & Easy Buckle Up, Authentic Graphite

Maxi-Cosi

9.2

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7

Trunki BoostApak | Kid's Travel Backpack and Portable Child Car Booster Seat | Group 2-3 | Ages 4 – 12 Years (Green)

Trunki BoostApak | Kid's Travel Backpack and Portable Child Car Booster Seat | Group 2-3 | Ages 4 – 12 Years (Green)

Trunki BoostApak | Kid's Travel Backpack and Portable Child Car Booster Seat | Group 2-3 | Ages 4 – 12 Years (Green)

Trunki

9.0

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8

globalkids i-Size High Back Booster Car Seat, Group 2/3 ISOFIX Toddler Car Seat, with Cup Holder, Adjustable Headrest/Backrest/Width, 3–12 Years, 15-36 kg, 100cm-150cm, Red Black

globalkids i-Size High Back Booster Car Seat, Group 2/3 ISOFIX Toddler Car Seat, with Cup Holder, Adjustable Headrest/Backrest/Width, 3–12 Years, 15-36 kg, 100cm-150cm, Red Black

globalkids i-Size High Back Booster Car Seat, Group 2/3 ISOFIX Toddler Car Seat, with Cup Holder, Adjustable Headrest/Backrest/Width, 3–12 Years, 15-36 kg, 100cm-150cm, Red Black

globalkids

8.7

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9

Graco Eldura R129 Harness Booster (76-145cm - 15 Months to Approx. 12 Years). Harness mode from 15 months to approx. 4 Yrs (76-105cm), Highback mode from approx. 3.5 to 12 yrs (105-145cm), Midnight

Graco Eldura R129 Harness Booster (76-145cm - 15 Months to Approx. 12 Years). Harness mode from 15 months to approx. 4 Yrs (76-105cm), Highback mode from approx. 3.5 to 12 yrs (105-145cm), Midnight

Graco Eldura R129 Harness Booster (76-145cm - 15 Months to Approx. 12 Years). Harness mode from 15 months to approx. 4 Yrs (76-105cm), Highback mode from approx. 3.5 to 12 yrs (105-145cm), Midnight

Graco

8.5

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10

Bubble Bum Inflatable Booster Car Seat - Travel Booster Seat - Portable Car Booster Seat - Booster Seat for Car - Foldable Narrow Slim Design Car Seat - Perfect for Kids 4-11yrs Old - Pink

Bubble Bum Inflatable Booster Car Seat - Travel Booster Seat - Portable Car Booster Seat - Booster Seat for Car - Foldable Narrow Slim Design Car Seat - Perfect for Kids 4-11yrs Old - Pink

Bubble Bum Inflatable Booster Car Seat - Travel Booster Seat - Portable Car Booster Seat - Booster Seat for Car - Foldable Narrow Slim Design Car Seat - Perfect for Kids 4-11yrs Old - Pink

BubbleBum

8.2

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