Britax Römer - Based on test winner KIDFIX III M (test winner Stiftung Warentest/ADAC 06/2019 in the 15-36kg category. GOOD rating of 1.7) the KIDFIX III S is suitable from approx. 3.5-12

Test: Britax Römer Kidfix M i-Size

Britax KIDFIX III M review - Car seats from 4 years - Car Seats

iF Design - KIDFIX i-SIZE

Britax Romer Kidfix i-size z testami ADAC

Test: Britax Römer Kidfix III M

STIFTUNG WARENTEST car seats

The ADAC child seat test autumn 2022

Britax KIDFIX III M review - Car seats from 4 years - Car Seats

The Best Britax Römer Car Seats (Dualfix, Baby-Safe, Kidfix, Advansafix) - My Baby Car Seat