How to measure chest width:
Measure under the arm and around the fullest part of the chest with arms down, keeping tape horizontal.
Youth Sizes:
- Small: 100 – 120mm
- Medium: 140 – 160mm
- Large: 180 – 200mm
Adult Sizes:
- Small: 340 – 360mm
- Medium: 380 – 400mm
- Large: 420 – 440mm