The Hybrid Youth Sport gives you all the safety of an adult version, but 25% smaller to fit a junior driver as young as 4 years old. Lighter, sleek, modern and appealing with defined wings for seatbelt containment. The sliding tethers and patent pending multi-tether system enhances side to side range of movement and field of vision. With it's lightweight design and DuPont® and carbon/polymer construction provides maximum comfort and maneuverability with superior strength. All of Simpson's Hybrid Series head restraints are designed for easily exiting a car without the danger of being entangled in other gear by offerings the lowest profile of any comparable device. This device comes with optional patented SAS (Seatbelt Anchor System) for even greater coverage in flips, barrel rolls and side impacts.