Britax Marathon car seats are loaded with safety features. Britax wants to make sure children are safe while riding in vehicles. If a new safety feature comes out you can rest assure Britax will integrate it into all of their car seats. Britax stays up to date on all of the most recent safety features. The Marathon has over seven safety features that helps ensure children’s safety. The Marathon car seat it also packed with comfort features, this helps children enjoy the car ride and that in turn helps parents focus on the road.