Youth-specific hip protectors are really important for kids and teens. Adult sizes—even small ones—aren't just scaled-down versions. They're built on adult body proportions, which means the protective pads won't sit in the right spot on a child's narrower hips and smaller frame. The result? The pads shift around or end up off to the side where they won't actually protect the hip joint during a fall.
Youth models are proportioned for smaller bodies with pad placement that lines up with where kids actually need coverage. They also stay put better since the waist and leg openings are sized for developing frames, not just tightened-down adult straps.
If you're shopping for a young skier, look specifically for youth-labeled hip protectors. The protection only works if the pad is positioned correctly when impact happens, and that alignment depends entirely on the right fit.