Energy-dissipation system

A child restraint includes a juvenile vehicle seat and an energy-absorption apparatus coupled to the juvenile vehicle seat. The energy-absorption apparatus is configured to absorb external energy associated with an external impact force applied to the energy-absorption apparatus and comprises a series of crush cells coupled to one another, each crush cell being defined by at least one wall delimiting a crush aperture opening into a crush space formed in the crush cell, said aperture having a diameter D such that 5mm ‰¤ D ‰¤ 50mm.