Youth XS (youth extra small) is usually a kids’ size around 5–6, made for younger elementary‑age children, but exact measurements vary by brand.

Quick scoop on youth XS

  • Often equals numeric size 4–6 or 5–6 in kids’ sizing.
  • Typical chest is roughly 24–26 inches (about 61–66 cm) for many brands.
  • Common height range is around 40–50 inches (about 102–127 cm), depending on the chart.
  • Usually fits ages roughly 5–7 years old, but this age range can shift a bit brand to brand.

Think of youth XS as the first “big kid” size just after toddler sizes, but before youth small.

Important note

There is no universal standard: one company might call youth XS a 4–5, another a 5–6, and sports brands like Nike or Puma may use slightly different height and chest ranges. Always check the specific size chart for the brand you’re buying, and if you can, measure the child’s chest and height to match their chart.

TL;DR: Youth XS is generally kids’ 4–6/5–6, chest about 24–26", height around low‑40s to high‑40s inches, but you should confirm with the exact brand’s chart.

Information gathered from public forums or data available on the internet and portrayed here.