Under Armour Youth Girls Youth Girls Charged Cotton T-Shirt Charged Cotton stretch construction delivers a soft, athletic fit and feel. Signature Moisture Transport System wicks sweat so it dries faster than ordinary cotton. Anti-microbial technology eliminates odors to keep your gear fresher, longer. HeatGear. YXS/US7, YS/US8 , YMD/US10-12 , YLG/US14-16 , YXL/US18-20. 100% charged cotton. Imported.