Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black Britax Römer Mama's Joy
Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black Britax Römer Mama's Joy
Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black Britax Römer Mama's Joy
Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black Britax Römer Mama's Joy
Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black Britax Römer Mama's Joy
Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black Britax Römer Mama's Joy

Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black

£109.95 GBP
£199.95 GBP £109.95 GBP
Tax included. Shipping calculated at checkout.

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This product meets UK safety regulations. Read our Product Safety & Compliance policy

The next-generation KIDFIX M i-SIZE has been designed in collaboration with leading car manufacturers to provide trusted safety and superior comfort for children aged 3.5 to 12 years. Approved to the latest i-Size regulations, it ensures optimal protection while its slim design allows it to fit seamlessly into a variety of vehicles—making it the perfect choice for growing families.

Product Highlights

ISOFIX Installation: Provides a secure fit for added safety.

High Back Booster Design: Supports your child as they grow, accommodating them from 100 to 150 cm.

Soft Padded for Comfort: Designed to keep your child comfortable during travel.

Adjustable Headrest: Easily adjusts to fit your child's height.

Features and Benefits

Enhanced Safety– Redesigned seating area reduces neck loads by up to 50 kg in a crash (internal tests with Q10 dummy).

Adjustable, Ergonomic Headrest– Specially designed for older children, with helpful markings for the perfect height adjustment.

Highback Booster Protection– Provides head-to-hipsafety with proper belt positioning and a padded headrest for comfort.

Air Ventilation System– Strategically placed air vents improve circulation for longer, more comfortable journeys.


Slim, Compact Design– Allows for three seats to fit side by side in many cars.


Removable, Machine-Washable Cover– Easy to clean for hassle-free maintenance.


Science-Backed Comfort– Engineered using Human Body Model analysis for ergonomic support at every stage of growth.

Technical Specifications
Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black Britax Römer Mama's Joy

Britax Romer Kidfix M i-Size High Back Booster Car Seat ISOFIX Cosmos Black

£109.95 GBP
£199.95 GBP £109.95 GBP