Under Armour Boys Bottoms Size and Fit Guide

WAIST: Measure around your natural waistline—right above your hips. Be careful not to squeeze too tight to allow a little give.

HIPS: With your feet together, measure around the fullest part of your hips to ensure you’ll have enough room to move comfortably.

  Waist (in) Hip (in) Height (in) US sizes
YXS 22 - 23 25 - 26 48 - 50 7
YSM 23 - 24 26½ - 28 50 - 54 8
YMD 25 - 26 29 - 30½ 54 - 59 10 - 12
YLG 26 - 27 32 - 33½ 59 - 63 14 - 16
YXL 28 - 29 35 - 36½ 63 - 67 18 - 20
 
  Waist (cm) Hip (cm) Height (cm) US sizes
YXS 55.6 - 58.4 64 - 66 122 - 127 7
YS 58.4 - 70 67 - 71 127 - 137 8
YM 63.5 - 66 74 - 77 137 - 149 10 - 12
YL 66 - 68.6 81 - 85 149 - 160 14 - 16
YXL 71.1 - 73.7 89 - 93 160 - 170 18 - 20
Measurements are desired standards, some variability may occur.

Fitted

fitted

A slimmer, athletic cut that allows total mobility but eliminates the bulk of extra fabric.

 

Loose

loose

Fuller cut for complete comfort, total range of motion & greater breathability.