Under Armour Boys' HeatGear Short Sleeve, White, Medium 10 Years, White / Black (100),1361723

Amazon

HeatGear fabric is ultra-soft & smooth for extreme comfort with very little weight Strategic mesh panels for added ventilation where you need it 4-way stretch construction moves better in every direction Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Sport Type: Exercise and Fitness Weave Type: Knit

Zalando

Heatgear Armour is our original performance baselayer—the one you put on first and take off last. So we made it extra comfortable by wicking sweat and stretching so you can move no matter what. Sale | Outer fabric material: 90% polyester, 10% elastane | Sale order at Zalando UK! Size: 10-12y. Color: White. Pattern: plain. Age group: Kids.