Youth Low Pro Tech long sleeve shirts are designed to ensure a superior combination of breathability, performance, and protection that thrive in extreme hot climates. Product Features: FABRIC: 88% Polyester, 12% Spandex PRODUCT WEIGHT: 5.6oz Sizing Information: YOUTH 6 8 10 12 14 HEIGHT 4'1 - 4'4 4'4 - 4'7 4'7 - 4'10 4'10 - 5'1 5'1 - 5'4 WEIGHT (lbs) 50 - 65 60 - 75 70 - 85 80 - 95 95 - 110 All BOTE products are built with an athletic true-to-size fit. If your measurements fall in between sizes and you prefer a looser fit, we suggest choosing the next largest size.