Material: 88% polyester 12% spandex, machine washable Flatlock Seam: Flat seams and tagless design to reduce skin friction Breathable: High-stretch four-sided fabric is lightweight and breathable, quickly dissipates heat, comfortable and not stuffy Quick Dry: Wicks moisture and stays dry quickly to keep you cool Occasions: Youth sports base layer, suitable for playing basketball, baseball, football, hockey, running, training, exercise, cycling Material: 88% polyester 12% spandex, machine washable Flatlock Seam: Flat seams and tagless design to reduce skin friction Breathable: High-stretch four-sided fabric is lightweight and breathable, quickly dissipates heat, comfortable and not stuffy Quick Dry: Wicks moisture and stays dry quickly to keep you cool Occasions: Youth sports base layer, suitable for playing basketball, baseball, football, hockey, running, training, exercise, cycling