# Car Seat i-Size & ISOFIX Finder | Clever Mum

> Filter R129 i-Size car seats by child height, ISOFIX requirements, 360-rotation, and extended rear-facing (ERF) options.

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# Car Seat i-Size & ISOFIX Finder

 
Filter R129 i-Size car seats by child height, ISOFIX requirements, 360-rotation, and extended rear-facing (ERF) options.

    
 
Quick answer — How does the Car Seat i-Size & ISOFIX Finder work? 

 
Select your baby’s age or height and vehicle mounting options to find compliant i-Size car seats matching your exact safety and convenience preferences.

     
## Filter Car Seats by Stage & Feature

  
All Car Seats
 
360° Swivel Seats
 
Extended Rear Facing (ERF)
     
### Joie Spin 360 i-Size

 £199  
Child height/age: **Birth to 4 yrs (40-105 cm)**

  ✓ R129 i-Size ISOFIX Base Included 360° Swivel    
### Cybex Anoris T i-Size

 £550  
Child height/age: **15 mo to 6 yrs (76-115 cm)**

  ✓ R129 i-Size ISOFIX Base Included Forward Facing    
### Nuna Todl Next

 £300  
Child height/age: **Birth to 4 yrs (40-105 cm)**

  ✓ R129 i-Size Next Base Required 360° Swivel    
### Maxi-Cosi Cabriofix i-Size

 £139  
Child height/age: **Birth to 12 mo (40-75 cm)**

  ✓ R129 i-Size Seatbelt or ISOFIX Rear Facing    
### Britax Romer Dualfix M i-Size

 £315  
Child height/age: **3 mo to 4 yrs (61-105 cm)**

  ✓ R129 i-Size ISOFIX Base Included 360° Swivel       
## Frequently asked questions about i-Size car seats

    What is the difference between R129 i-Size and older R44 car seats?   
 ECE R129 (i-Size) classifies car seats by the child’s height rather than weight, includes mandatory side-impact testing, and requires children to remain rear-facing until at least 15 months old. 

   Are 360-swivel car seats compatible with all cars?   
 Swivel car seats require ISOFIX anchor points in your vehicle. Check that your car model is listed on the manufacturer’s vehicle fitting list before buying.