【Fabric】Our long sleeve compression shirt is made of 90% polyester and 10% spandex, which is ultra soft, breathable and sweat-wicking 4-way stretch superior quality fabric, enable sweat easy for air-dry to prevent clothes sticking to the body. Keeping you cool and comfortable during even the most intense workouts. Excellent elasticity and durability shirts are great for all day wear. 

【Flatlock Seams & UV Protection】This shirt adopt four needles ergonomic flatlock seams that allows you to move better in every direction without fear of chafing. UPF protects your skin from the sun's harmful UV rays.