Britax 300mm Extension Strap

This extension strap is suitable for child restraints manufactured from march 1993 onwards.

Some vehicles require an extension strap to allow a tether Strap or upper anchorage strap on a child restraint to be connected to the child restraint anchorage in the vehicle. 

This is most often required for seat in the rearward facing position. The 300mm is the most commonly required extension length in our experience.

This extension strap will work with all Britax seats as well as other brands.