Pull On closure Wash cold 3-pack boys girls short sleeve shirts; great for summer casual wear or sports like soccer, football, baseball, hockey, riding, running. 90% Polyester/10% Spandex, soft and comfortable; seamless torso and soft edging, like a second skin, kids will have interest in wearing the t-shirts. Kids Compression t-shirts improve blood flow and oxygen supply to kid’s muscle; 4-way stretch provides a gentle & deep sensory pressure that keep children stay calm and focused on study or sports. Dry fit tee tops as athletic shirts for running or cycling; active base layers under blouses, hoodies or jackets; casual daily tees for school or outdoor playing. The running t-shirts are designed fitting tighter than regular shirts, pls size up for loose fit. Machine wash cold.